23166156 has 24 divisors (see below), whose sum is σ = 58212784. Its totient is φ = 7128000.

The previous prime is 23166151. The next prime is 23166163. The reversal of 23166156 is 65166132.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (23166151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74095 + ... + 74406.

Almost surely, 2^23166156 is an apocalyptic number.

23166156 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

23166156 is an abundant number, since it is smaller than the sum of its proper divisors (35046628).

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

23166156 is a wasteful number, since it uses less digits than its factorization.

23166156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148521 (or 148519 counting only the distinct ones).

The product of its digits is 6480, while the sum is 30.

The square root of 23166156 is about 4813.1233102841. The cubic root of 23166156 is about 285.0698751414.

The spelling of 23166156 in words is "twenty-three million, one hundred sixty-six thousand, one hundred fifty-six".