23156748 has 18 divisors (see below), whose sum is σ = 58535204. Its totient is φ = 7718904.

The previous prime is 23156743. The next prime is 23156767. The reversal of 23156748 is 84765132.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 643243 = 23156748 / (2 + 3 + 1 + 5 + 6 + 7 + 4 + 8).

It is not an unprimeable number, because it can be changed into a prime (23156743) 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, 321586 + ... + 321657.

Almost surely, 2^23156748 is an apocalyptic number.

It is an amenable number.

23156748 is an abundant number, since it is smaller than the sum of its proper divisors (35378456).

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

23156748 is a wasteful number, since it uses less digits than its factorization.

23156748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643253 (or 643248 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 23156748 is about 4812.1458830754. The cubic root of 23156748 is about 285.0312800386.

The spelling of 23156748 in words is "twenty-three million, one hundred fifty-six thousand, seven hundred forty-eight".