23155180 has 12 divisors (see below), whose sum is σ = 48625920. Its totient is φ = 9262064.

The previous prime is 23155177. The next prime is 23155189. The reversal of 23155180 is 8155132.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (23155189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 578860 + ... + 578899.

It is an arithmetic number, because the mean of its divisors is an integer number (4052160).

Almost surely, 2^23155180 is an apocalyptic number.

23155180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23155180 is an abundant number, since it is smaller than the sum of its proper divisors (25470740).

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

23155180 is a wasteful number, since it uses less digits than its factorization.

23155180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157768 (or 1157766 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 23155180 is about 4811.9829592383. The cubic root of 23155180 is about 285.0248465052.

The spelling of 23155180 in words is "twenty-three million, one hundred fifty-five thousand, one hundred eighty".