23812920 has 128 divisors (see below), whose sum is σ = 84110400. Its totient is φ = 5971968.

The previous prime is 23812913. The next prime is 23812933. The reversal of 23812920 is 2921832.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17712 + ... + 19008.

Almost surely, 2^23812920 is an apocalyptic number.

23812920 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 23812920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42055200).

23812920 is an abundant number, since it is smaller than the sum of its proper divisors (60297480).

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

23812920 is a wasteful number, since it uses less digits than its factorization.

23812920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334 (or 1324 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 23812920 is about 4879.8483582997. The cubic root of 23812920 is about 287.6984691350.

The spelling of 23812920 in words is "twenty-three million, eight hundred twelve thousand, nine hundred twenty".