23909872 has 20 divisors (see below), whose sum is σ = 52943536. Its totient is φ = 10247040.

The previous prime is 23909867. The next prime is 23909911. The reversal of 23909872 is 27890932.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106629 + ... + 106852.

Almost surely, 2^23909872 is an apocalyptic number.

It is an amenable number.

23909872 is an abundant number, since it is smaller than the sum of its proper divisors (29033664).

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

23909872 is a wasteful number, since it uses less digits than its factorization.

23909872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213496 (or 213490 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 23909872 is about 4889.7721828322. The cubic root of 23909872 is about 288.0883859378.

The spelling of 23909872 in words is "twenty-three million, nine hundred nine thousand, eight hundred seventy-two".