23239943028 has 36 divisors (see below), whose sum is σ = 59139689700. Its totient is φ = 7694654976.

The previous prime is 23239943021. The next prime is 23239943047. The reversal of 23239943028 is 82034993232.

23239943028 is a `hidden beast` number, since 23 + 239 + 94 + 302 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13975495524 + 9264447504 = 118218^2 + 96252^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23239943021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2160925 + ... + 2171652.

Almost surely, 2^23239943028 is an apocalyptic number.

It is an amenable number.

23239943028 is an abundant number, since it is smaller than the sum of its proper divisors (35899746672).

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

23239943028 is a wasteful number, since it uses less digits than its factorization.

23239943028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4332736 (or 4332731 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 23239943028 in words is "twenty-three billion, two hundred thirty-nine million, nine hundred forty-three thousand, twenty-eight".