23730920 has 16 divisors (see below), whose sum is σ = 53394660. Its totient is φ = 9492352.

The previous prime is 23730919. The next prime is 23730947. The reversal of 23730920 is 2903732.

It can be written as a sum of positive squares in 2 ways, for example, as 19412836 + 4318084 = 4406^2 + 2078^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23730920.

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, 296597 + ... + 296676.

Almost surely, 2^23730920 is an apocalyptic number.

23730920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23730920 is an abundant number, since it is smaller than the sum of its proper divisors (29663740).

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

23730920 is a wasteful number, since it uses less digits than its factorization.

23730920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593284 (or 593280 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 23730920 is about 4871.4392123889. The cubic root of 23730920 is about 287.3678586189.

The spelling of 23730920 in words is "twenty-three million, seven hundred thirty thousand, nine hundred twenty".