23157072 has 30 divisors (see below), whose sum is σ = 64808042. Its totient is φ = 7718976.

The previous prime is 23157059. The next prime is 23157073. The reversal of 23157072 is 27075132.

23157072 is a `hidden beast` number, since 23 + 1 + 570 + 72 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13571856 + 9585216 = 3684^2 + 3096^2 .

It is a super-2 number, since 2×23157072² = 1072499967226368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23157073) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 80263 + ... + 80550.

Almost surely, 2^23157072 is an apocalyptic number.

It is an amenable number.

23157072 is an abundant number, since it is smaller than the sum of its proper divisors (41650970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23157072 is a wasteful number, since it uses less digits than its factorization.

23157072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160827 (or 160818 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 23157072 is about 4812.1795477725. The cubic root of 23157072 is about 285.0326093805.

The spelling of 23157072 in words is "twenty-three million, one hundred fifty-seven thousand, seventy-two".