23156928 has 84 divisors (see below), whose sum is σ = 68879720. Its totient is φ = 7713792.

The previous prime is 23156911. The next prime is 23156933. The reversal of 23156928 is 82965132.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 23156892 and 23156901.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14808 + ... + 16296.

Almost surely, 2^23156928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23156928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34439860).

23156928 is an abundant number, since it is smaller than the sum of its proper divisors (45722792).

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

23156928 is an equidigital number, since it uses as much as digits as its factorization.

23156928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1516 (or 1494 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 23156928 is about 4812.1645857140. The cubic root of 23156928 is about 285.0320185634.

The spelling of 23156928 in words is "twenty-three million, one hundred fifty-six thousand, nine hundred twenty-eight".