23996520 has 128 divisors (see below), whose sum is σ = 84758400. Its totient is φ = 6018048.

The previous prime is 23996513. The next prime is 23996527. The reversal of 23996520 is 2569932.

It is an interprime number because it is at equal distance from previous prime (23996513) and next prime (23996527).

It is a super-2 number, since 2×23996520² = 1151665944220800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23996527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17707 + ... + 19013.

It is an arithmetic number, because the mean of its divisors is an integer number (662175).

Almost surely, 2^23996520 is an apocalyptic number.

23996520 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 23996520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42379200).

23996520 is an abundant number, since it is smaller than the sum of its proper divisors (60761880).

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

23996520 is a wasteful number, since it uses less digits than its factorization.

23996520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344 (or 1334 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 23996520 is about 4898.6242966776. The cubic root of 23996520 is about 288.4359716417.

The spelling of 23996520 in words is "twenty-three million, nine hundred ninety-six thousand, five hundred twenty".