23564144 has 20 divisors (see below), whose sum is σ = 47641296. Its totient is φ = 11269632.

The previous prime is 23564143. The next prime is 23564147. The reversal of 23564144 is 44146532.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23564143) 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, 31649 + ... + 32384.

Almost surely, 2^23564144 is an apocalyptic number.

It is an amenable number.

23564144 is an abundant number, since it is smaller than the sum of its proper divisors (24077152).

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

23564144 is a wasteful number, since it uses less digits than its factorization.

23564144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64064 (or 64058 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

The square root of 23564144 is about 4854.2912973986. The cubic root of 23564144 is about 286.6930881242.

The spelling of 23564144 in words is "twenty-three million, five hundred sixty-four thousand, one hundred forty-four".