23920164 has 48 divisors (see below), whose sum is σ = 65284800. Its totient is φ = 7553088.

The previous prime is 23920163. The next prime is 23920177. The reversal of 23920164 is 46102932.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (23920163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3777 + ... + 7880.

It is an arithmetic number, because the mean of its divisors is an integer number (1360100).

Almost surely, 2^23920164 is an apocalyptic number.

It is an amenable number.

23920164 is an abundant number, since it is smaller than the sum of its proper divisors (41364636).

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

23920164 is a wasteful number, since it uses less digits than its factorization.

23920164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11689 (or 11681 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 23920164 is about 4890.8244703731. The cubic root of 23920164 is about 288.1297158725.

The spelling of 23920164 in words is "twenty-three million, nine hundred twenty thousand, one hundred sixty-four".