23491564 has 6 divisors (see below), whose sum is σ = 41110244. Its totient is φ = 11745780.

The previous prime is 23491541. The next prime is 23491577. The reversal of 23491564 is 46519432.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2936442 + ... + 2936449.

Almost surely, 2^23491564 is an apocalyptic number.

It is an amenable number.

23491564 is a deficient number, since it is larger than the sum of its proper divisors (17618680).

23491564 is a wasteful number, since it uses less digits than its factorization.

23491564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5872895 (or 5872893 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 23491564 is about 4846.8096723515. The cubic root of 23491564 is about 286.3984372802.

The spelling of 23491564 in words is "twenty-three million, four hundred ninety-one thousand, five hundred sixty-four".