23936720 has 30 divisors (see below), whose sum is σ = 55754802. Its totient is φ = 9557184.

The previous prime is 23936719. The next prime is 23936729. The reversal of 23936720 is 2763932.

It is a happy number.

23936720 is nontrivially palindromic in base 9.

It can be written as a sum of positive squares in only one way, i.e., 19149376 + 4787344 = 4376^2 + 2188^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23936729) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43487 + ... + 44033.

Almost surely, 2^23936720 is an apocalyptic number.

23936720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23936720 is an abundant number, since it is smaller than the sum of its proper divisors (31818082).

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

23936720 is an frugal number, since it uses more digits than its factorization.

23936720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107 (or 554 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 23936720 is about 4892.5167347695. The cubic root of 23936720 is about 288.1961754982.

The spelling of 23936720 in words is "twenty-three million, nine hundred thirty-six thousand, seven hundred twenty".