23537920 has 144 divisors (see below), whose sum is σ = 67108608. Its totient is φ = 7741440.

The previous prime is 23537909. The next prime is 23537939. The reversal of 23537920 is 2973532.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331485 + ... + 331555.

It is an arithmetic number, because the mean of its divisors is an integer number (466032).

Almost surely, 2^23537920 is an apocalyptic number.

23537920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23537920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33554304).

23537920 is an abundant number, since it is smaller than the sum of its proper divisors (43570688).

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

23537920 is an equidigital number, since it uses as much as digits as its factorization.

23537920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 23537920 is about 4851.5894302795. The cubic root of 23537920 is about 286.5866972417.

The spelling of 23537920 in words is "twenty-three million, five hundred thirty-seven thousand, nine hundred twenty".