23997320 has 16 divisors (see below), whose sum is σ = 53994060. Its totient is φ = 9598912.

The previous prime is 23997299. The next prime is 23997343. The reversal of 23997320 is 2379932.

It can be written as a sum of positive squares in 2 ways, for example, as 19695844 + 4301476 = 4438^2 + 2074^2 .

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, 299927 + ... + 300006.

Almost surely, 2^23997320 is an apocalyptic number.

23997320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23997320 is an abundant number, since it is smaller than the sum of its proper divisors (29996740).

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

23997320 is a wasteful number, since it uses less digits than its factorization.

23997320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599944 (or 599940 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 23997320 is about 4898.7059515754. The cubic root of 23997320 is about 288.4391769150.

The spelling of 23997320 in words is "twenty-three million, nine hundred ninety-seven thousand, three hundred twenty".