23397320 has 32 divisors (see below), whose sum is σ = 54070200. Its totient is φ = 9105408.

The previous prime is 23397317. The next prime is 23397323. The reversal of 23397320 is 2379332.

It is an interprime number because it is at equal distance from previous prime (23397317) and next prime (23397323).

It can be written as a sum of positive squares in 4 ways, for example, as 17355556 + 6041764 = 4166^2 + 2458^2 .

It is not an unprimeable number, because it can be changed into a prime (23397323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6425 + ... + 9384.

Almost surely, 2^23397320 is an apocalyptic number.

23397320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23397320 is an abundant number, since it is smaller than the sum of its proper divisors (30672880).

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

23397320 is a wasteful number, since it uses less digits than its factorization.

23397320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15857 (or 15853 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 29.

The square root of 23397320 is about 4837.0776301399. The cubic root of 23397320 is about 286.0149306760.

The spelling of 23397320 in words is "twenty-three million, three hundred ninety-seven thousand, three hundred twenty".