23140164 has 24 divisors (see below), whose sum is σ = 54386080. Its totient is φ = 7657344.

The previous prime is 23140163. The next prime is 23140177. The reversal of 23140164 is 46104132.

It is a self number, because there is not a number n which added to its sum of digits gives 23140164.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23140163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5269 + ... + 8604.

Almost surely, 2^23140164 is an apocalyptic number.

It is an amenable number.

23140164 is an abundant number, since it is smaller than the sum of its proper divisors (31245916).

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

23140164 is a wasteful number, since it uses less digits than its factorization.

23140164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14019 (or 14017 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 23140164 is about 4810.4224346724. The cubic root of 23140164 is about 284.9632208618.

Adding to 23140164 its reverse (46104132), we get a palindrome (69244296).

The spelling of 23140164 in words is "twenty-three million, one hundred forty thousand, one hundred sixty-four".