23307136 has 32 divisors (see below), whose sum is σ = 49168080. Its totient is φ = 10967040.

The previous prime is 23307113. The next prime is 23307139. The reversal of 23307136 is 63170332.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 23307136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23307139) 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, 3180 + ... + 7531.

Almost surely, 2^23307136 is an apocalyptic number.

It is an amenable number.

23307136 is an abundant number, since it is smaller than the sum of its proper divisors (25860944).

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

23307136 is a wasteful number, since it uses less digits than its factorization.

23307136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10742 (or 10730 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 25.

The square root of 23307136 is about 4827.7464722166. The cubic root of 23307136 is about 285.6469799555.

Adding to 23307136 its reverse (63170332), we get a palindrome (86477468).

The spelling of 23307136 in words is "twenty-three million, three hundred seven thousand, one hundred thirty-six".