23507920 has 40 divisors (see below), whose sum is σ = 56424960. Its totient is φ = 9098880.

The previous prime is 23507917. The next prime is 23507927. The reversal of 23507920 is 2970532.

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 (23507927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2260 + ... + 7219.

It is an arithmetic number, because the mean of its divisors is an integer number (1410624).

Almost surely, 2^23507920 is an apocalyptic number.

23507920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23507920 is an abundant number, since it is smaller than the sum of its proper divisors (32917040).

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

23507920 is a wasteful number, since it uses less digits than its factorization.

23507920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9523 (or 9517 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 23507920 is about 4848.4966742280. The cubic root of 23507920 is about 286.4648901581.

The spelling of 23507920 in words is "twenty-three million, five hundred seven thousand, nine hundred twenty".