23423728 has 10 divisors (see below), whose sum is σ = 45383504. Its totient is φ = 11711856.

The previous prime is 23423711. The next prime is 23423747. The reversal of 23423728 is 82732432.

It is a self number, because there is not a number n which added to its sum of digits gives 23423728.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 731976 + ... + 732007.

Almost surely, 2^23423728 is an apocalyptic number.

It is an amenable number.

23423728 is a deficient number, since it is larger than the sum of its proper divisors (21959776).

23423728 is a wasteful number, since it uses less digits than its factorization.

23423728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463991 (or 1463985 counting only the distinct ones).

The product of its digits is 16128, while the sum is 31.

The square root of 23423728 is about 4839.8066077066. The cubic root of 23423728 is about 286.1224963062.

The spelling of 23423728 in words is "twenty-three million, four hundred twenty-three thousand, seven hundred twenty-eight".