23872816 has 80 divisors (see below), whose sum is σ = 54460800. Its totient is φ = 10105920.

The previous prime is 23872813. The next prime is 23872841. The reversal of 23872816 is 61827832.

23872816 = T₁₇₈ + T₁₇₉ + ... + T₅₂₉.

It is a super-2 number, since 2×23872816² = 1139822687539712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23872813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404595 + ... + 404653.

It is an arithmetic number, because the mean of its divisors is an integer number (680760).

Almost surely, 2^23872816 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 23872816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27230400).

23872816 is an abundant number, since it is smaller than the sum of its proper divisors (30587984).

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

23872816 is a wasteful number, since it uses less digits than its factorization.

23872816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 91 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 23872816 is about 4885.9815799898. The cubic root of 23872816 is about 287.9394805963.

The spelling of 23872816 in words is "twenty-three million, eight hundred seventy-two thousand, eight hundred sixteen".