23972520 has 192 divisors, whose sum is σ = 85800960. Its totient is φ = 5322240.

The previous prime is 23972503. The next prime is 23972521. The reversal of 23972520 is 2527932.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (23972521) 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 47 ways as a sum of consecutive naturals, for example, 188697 + ... + 188823.

It is an arithmetic number, because the mean of its divisors is an integer number (446880).

Almost surely, 2^23972520 is an apocalyptic number.

23972520 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 23972520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42900480).

23972520 is an abundant number, since it is smaller than the sum of its proper divisors (61828440).

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

23972520 is a wasteful number, since it uses less digits than its factorization.

23972520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 23972520 is about 4896.1740165153. The cubic root of 23972520 is about 288.3397802992.

The spelling of 23972520 in words is "twenty-three million, nine hundred seventy-two thousand, five hundred twenty".