23130528 has 24 divisors (see below), whose sum is σ = 60717888. Its totient is φ = 7710144.

The previous prime is 23130521. The next prime is 23130553. The reversal of 23130528 is 82503132.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 23130498 and 23130507.

It is not an unprimeable number, because it can be changed into a prime (23130521) 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, 120376 + ... + 120567.

It is an arithmetic number, because the mean of its divisors is an integer number (2529912).

Almost surely, 2^23130528 is an apocalyptic number.

It is an amenable number.

23130528 is an abundant number, since it is smaller than the sum of its proper divisors (37587360).

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

23130528 is a wasteful number, since it uses less digits than its factorization.

23130528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240956 (or 240948 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 23130528 is about 4809.4207551430. The cubic root of 23130528 is about 284.9236606864.

The spelling of 23130528 in words is "twenty-three million, one hundred thirty thousand, five hundred twenty-eight".