23497920 has 168 divisors, whose sum is σ = 83210400. Its totient is φ = 6082560.

The previous prime is 23497891. The next prime is 23497933. The reversal of 23497920 is 2979432.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117981 + ... + 118179.

It is an arithmetic number, because the mean of its divisors is an integer number (495300).

Almost surely, 2^23497920 is an apocalyptic number.

23497920 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 23497920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41605200).

23497920 is an abundant number, since it is smaller than the sum of its proper divisors (59712480).

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

23497920 is a wasteful number, since it uses less digits than its factorization.

23497920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 23497920 is about 4847.4653170497. The cubic root of 23497920 is about 286.4242647689.

The spelling of 23497920 in words is "twenty-three million, four hundred ninety-seven thousand, nine hundred twenty".