23239564 has 6 divisors (see below), whose sum is σ = 40669244. Its totient is φ = 11619780.

The previous prime is 23239547. The next prime is 23239571. The reversal of 23239564 is 46593232.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2904942 + ... + 2904949.

Almost surely, 2^23239564 is an apocalyptic number.

It is an amenable number.

23239564 is a deficient number, since it is larger than the sum of its proper divisors (17429680).

23239564 is a wasteful number, since it uses less digits than its factorization.

23239564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5809895 (or 5809893 counting only the distinct ones).

The product of its digits is 38880, while the sum is 34.

The square root of 23239564 is about 4820.7430962456. The cubic root of 23239564 is about 285.3706637089.

The spelling of 23239564 in words is "twenty-three million, two hundred thirty-nine thousand, five hundred sixty-four".