23659728 has 20 divisors (see below), whose sum is σ = 61121088. Its totient is φ = 7886560.

The previous prime is 23659723. The next prime is 23659729. The reversal of 23659728 is 82795632.

It is a self number, because there is not a number n which added to its sum of digits gives 23659728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23659721) 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, 246408 + ... + 246503.

Almost surely, 2^23659728 is an apocalyptic number.

It is an amenable number.

23659728 is an abundant number, since it is smaller than the sum of its proper divisors (37461360).

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

23659728 is a wasteful number, since it uses less digits than its factorization.

23659728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492922 (or 492916 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 23659728 is about 4864.1266430882. The cubic root of 23659728 is about 287.0802059864.

The spelling of 23659728 in words is "twenty-three million, six hundred fifty-nine thousand, seven hundred twenty-eight".