23624640 has 168 divisors, whose sum is σ = 87648288. Its totient is φ = 5806080.

The previous prime is 23624639. The next prime is 23624677. The reversal of 23624640 is 4642632.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37125 + ... + 37755.

It is an arithmetic number, because the mean of its divisors is an integer number (521716).

Almost surely, 2^23624640 is an apocalyptic number.

23624640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23624640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43824144).

23624640 is an abundant number, since it is smaller than the sum of its proper divisors (64023648).

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

23624640 is a wasteful number, since it uses less digits than its factorization.

23624640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667 (or 654 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 23624640 is about 4860.5184908608. The cubic root of 23624640 is about 286.9382199371.

The spelling of 23624640 in words is "twenty-three million, six hundred twenty-four thousand, six hundred forty".