23439872 has 40 divisors (see below), whose sum is σ = 49607316. Its totient is φ = 11026432.

The previous prime is 23439847. The next prime is 23439893. The reversal of 23439872 is 27893432.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 23193856 + 246016 = 4816^2 + 496^2 .

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, 7358 + ... + 10050.

Almost surely, 2^23439872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23439872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24803658).

23439872 is an abundant number, since it is smaller than the sum of its proper divisors (26167444).

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

23439872 is an equidigital number, since it uses as much as digits as its factorization.

23439872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2728 (or 2712 counting only the distinct ones).

The product of its digits is 72576, while the sum is 38.

The square root of 23439872 is about 4841.4741556679. The cubic root of 23439872 is about 286.1882145782.

The spelling of 23439872 in words is "twenty-three million, four hundred thirty-nine thousand, eight hundred seventy-two".