23764720 has 40 divisors (see below), whose sum is σ = 63147744. Its totient is φ = 8147712.

The previous prime is 23764711. The next prime is 23764721. The reversal of 23764720 is 2746732.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23764721) 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, 20659 + ... + 21778.

Almost surely, 2^23764720 is an apocalyptic number.

23764720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23764720 is an abundant number, since it is smaller than the sum of its proper divisors (39383024).

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

23764720 is a wasteful number, since it uses less digits than its factorization.

23764720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42457 (or 42451 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 23764720 is about 4874.9071786035. The cubic root of 23764720 is about 287.5042267810.

The spelling of 23764720 in words is "twenty-three million, seven hundred sixty-four thousand, seven hundred twenty".