23312503728 has 50 divisors (see below), whose sum is σ = 67473153044. Its totient is φ = 7770834144.

The previous prime is 23312503723. The next prime is 23312503811. The reversal of 23312503728 is 82730521332.

23312503728 is a `hidden beast` number, since 2 + 3 + 31 + 250 + 372 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 23312503692 and 23312503701.

It is not an unprimeable number, because it can be changed into a prime (23312503723) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8992726 + ... + 8995317.

Almost surely, 2^23312503728 is an apocalyptic number.

It is an amenable number.

23312503728 is an abundant number, since it is smaller than the sum of its proper divisors (44160649316).

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

23312503728 is a wasteful number, since it uses less digits than its factorization.

23312503728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17988063 (or 17988048 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The spelling of 23312503728 in words is "twenty-three billion, three hundred twelve million, five hundred three thousand, seven hundred twenty-eight".