23439644 has 12 divisors (see below), whose sum is σ = 41973624. Its totient is φ = 11447184.

The previous prime is 23439641. The next prime is 23439649. The reversal of 23439644 is 44693432.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23439641) 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, 67967 + ... + 68310.

It is an arithmetic number, because the mean of its divisors is an integer number (3497802).

Almost surely, 2^23439644 is an apocalyptic number.

It is an amenable number.

23439644 is a deficient number, since it is larger than the sum of its proper divisors (18533980).

23439644 is a wasteful number, since it uses less digits than its factorization.

23439644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136324 (or 136322 counting only the distinct ones).

The product of its digits is 62208, while the sum is 35.

The square root of 23439644 is about 4841.4506090634. The cubic root of 23439644 is about 286.1872866561.

The spelling of 23439644 in words is "twenty-three million, four hundred thirty-nine thousand, six hundred forty-four".