23633920 has 56 divisors (see below), whose sum is σ = 56816244. Its totient is φ = 9437184.

The previous prime is 23633887. The next prime is 23633941. The reversal of 23633920 is 2933632.

It can be written as a sum of positive squares in 2 ways, for example, as 21827584 + 1806336 = 4672^2 + 1344^2 .

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, 40672 + ... + 41248.

Almost surely, 2^23633920 is an apocalyptic number.

23633920 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 23633920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28408122).

23633920 is an abundant number, since it is smaller than the sum of its proper divisors (33182324).

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

23633920 is an frugal number, since it uses more digits than its factorization.

23633920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608 (or 584 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 28.

The square root of 23633920 is about 4861.4730277972. The cubic root of 23633920 is about 286.9757857737.

The spelling of 23633920 in words is "twenty-three million, six hundred thirty-three thousand, nine hundred twenty".