23609872 has 80 divisors (see below), whose sum is σ = 56996352. Its totient is φ = 9308160.

The previous prime is 23609869. The next prime is 23609909. The reversal of 23609872 is 27890632.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38593 + ... + 39199.

Almost surely, 2^23609872 is an apocalyptic number.

23609872 is a gapful number since it is divisible by the number (22) 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 23609872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28498176).

23609872 is an abundant number, since it is smaller than the sum of its proper divisors (33386480).

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

23609872 is a wasteful number, since it uses less digits than its factorization.

23609872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656 (or 650 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 23609872 is about 4858.9990738834. Note that the first 3 decimals coincide. The cubic root of 23609872 is about 286.8784181523.

The spelling of 23609872 in words is "twenty-three million, six hundred nine thousand, eight hundred seventy-two".