23155880 has 32 divisors (see below), whose sum is σ = 56838240. Its totient is φ = 8420160.

The previous prime is 23155879. The next prime is 23155897. The reversal of 23155880 is 8855132.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25874 + ... + 26753.

It is an arithmetic number, because the mean of its divisors is an integer number (1776195).

Almost surely, 2^23155880 is an apocalyptic number.

23155880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23155880 is an abundant number, since it is smaller than the sum of its proper divisors (33682360).

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

23155880 is a wasteful number, since it uses less digits than its factorization.

23155880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52649 (or 52645 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 23155880 is about 4812.0556937758. The cubic root of 23155880 is about 285.0277186542.

The spelling of 23155880 in words is "twenty-three million, one hundred fifty-five thousand, eight hundred eighty".