23900531528 has 32 divisors (see below), whose sum is σ = 48693792000. Its totient is φ = 10956098880.

The previous prime is 23900531521. The next prime is 23900531531. The reversal of 23900531528 is 82513500932.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 23900531491 and 23900531500.

It is not an unprimeable number, because it can be changed into a prime (23900531521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2531423 + ... + 2540846.

It is an arithmetic number, because the mean of its divisors is an integer number (1521681000).

Almost surely, 2^23900531528 is an apocalyptic number.

It is an amenable number.

23900531528 is an abundant number, since it is smaller than the sum of its proper divisors (24793260472).

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

23900531528 is a wasteful number, since it uses less digits than its factorization.

23900531528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5072325 (or 5072321 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 23900531528 in words is "twenty-three billion, nine hundred million, five hundred thirty-one thousand, five hundred twenty-eight".