23265720 has 48 divisors (see below), whose sum is σ = 75614760. Its totient is φ = 6204096.

The previous prime is 23265691. The next prime is 23265721. The reversal of 23265720 is 2756232.

23265720 is a `hidden beast` number, since 2 + 3 + 2 + 657 + 2 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23265721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31954 + ... + 32673.

Almost surely, 2^23265720 is an apocalyptic number.

23265720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23265720 is an abundant number, since it is smaller than the sum of its proper divisors (52349040).

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

23265720 is a wasteful number, since it uses less digits than its factorization.

23265720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64644 (or 64637 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 23265720 is about 4823.4551931162. The cubic root of 23265720 is about 285.4776846000.

The spelling of 23265720 in words is "twenty-three million, two hundred sixty-five thousand, seven hundred twenty".