23749664 has 24 divisors (see below), whose sum is σ = 47755008. Its totient is φ = 11621440.

The previous prime is 23749657. The next prime is 23749667. The reversal of 23749664 is 46694732.

It is a super-2 number, since 2×23749664² = 1128093080225792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23749667) 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, 6392 + ... + 9399.

It is an arithmetic number, because the mean of its divisors is an integer number (1989792).

Almost surely, 2^23749664 is an apocalyptic number.

It is an amenable number.

23749664 is an abundant number, since it is smaller than the sum of its proper divisors (24005344).

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

23749664 is a wasteful number, since it uses less digits than its factorization.

23749664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15848 (or 15840 counting only the distinct ones).

The product of its digits is 217728, while the sum is 41.

The square root of 23749664 is about 4873.3626994099. The cubic root of 23749664 is about 287.4434984114.

The spelling of 23749664 in words is "twenty-three million, seven hundred forty-nine thousand, six hundred sixty-four".