23155072 has 32 divisors (see below), whose sum is σ = 48562200. Its totient is φ = 10967040.

The previous prime is 23155063. The next prime is 23155123. The reversal of 23155072 is 27055132.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2329 + ... + 7192.

Almost surely, 2^23155072 is an apocalyptic number.

It is an amenable number.

23155072 is an abundant number, since it is smaller than the sum of its proper divisors (25407128).

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

23155072 is an equidigital number, since it uses as much as digits as its factorization.

23155072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9554 (or 9542 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 23155072 is about 4811.9717372404. The cubic root of 23155072 is about 285.0244033685.

It can be divided in two parts, 2 and 3155072, that multiplied together give a square (6310144 = 2512²).

The spelling of 23155072 in words is "twenty-three million, one hundred fifty-five thousand, seventy-two".