23631680 has 28 divisors (see below), whose sum is σ = 56273700. Its totient is φ = 9452544.

The previous prime is 23631661. The next prime is 23631689. The reversal of 23631680 is 8613632.

It can be written as a sum of positive squares in 2 ways, for example, as 15429184 + 8202496 = 3928^2 + 2864^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23631689) 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, 36605 + ... + 37244.

It is an arithmetic number, because the mean of its divisors is an integer number (2009775).

Almost surely, 2^23631680 is an apocalyptic number.

23631680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23631680 is an abundant number, since it is smaller than the sum of its proper divisors (32642020).

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

23631680 is an equidigital number, since it uses as much as digits as its factorization.

23631680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73866 (or 73856 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 23631680 is about 4861.2426394904. The cubic root of 23631680 is about 286.9667190584.

The spelling of 23631680 in words is "twenty-three million, six hundred thirty-one thousand, six hundred eighty".