247922 has 8 divisors (see below), whose sum is σ = 375516. Its totient is φ = 122752.

The previous prime is 247913. The next prime is 247939. The reversal of 247922 is 229742.

247922 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 203401 + 44521 = 451^2 + 211^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×247922² = 122930636168, which contains 22 as substring.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 247891 and 247900.

It is an unprimeable number.

247922 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323 + ... + 774.

2²⁴⁷⁹²² is an apocalyptic number.

247922 is a deficient number, since it is larger than the sum of its proper divisors (127594).

247922 is a wasteful number, since it uses less digits than its factorization.

247922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212.

The product of its digits is 2016, while the sum is 26.

The square root of 247922 is about 497.9176638763. The cubic root of 247922 is about 62.8210255913.

The spelling of 247922 in words is "two hundred forty-seven thousand, nine hundred twenty-two".