23136580 has 24 divisors (see below), whose sum is σ = 49718592. Its totient is φ = 9039072.

The previous prime is 23136563. The next prime is 23136583. The reversal of 23136580 is 8563132.

It is not an unprimeable number, because it can be changed into a prime (23136583) 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, 12592 + ... + 14311.

It is an arithmetic number, because the mean of its divisors is an integer number (2071608).

Almost surely, 2^23136580 is an apocalyptic number.

23136580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23136580 is an abundant number, since it is smaller than the sum of its proper divisors (26582012).

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

23136580 is a wasteful number, since it uses less digits than its factorization.

23136580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26955 (or 26953 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 23136580 is about 4810.0498957911. The cubic root of 23136580 is about 284.9485081899.

It can be divided in two parts, 23136 and 580, that added together give a square (23716 = 154²).

The spelling of 23136580 in words is "twenty-three million, one hundred thirty-six thousand, five hundred eighty".