23751980 has 24 divisors (see below), whose sum is σ = 57005088. Its totient is φ = 8143488.

The previous prime is 23751977. The next prime is 23751989. The reversal of 23751980 is 8915732.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 23751980.

It is not an unprimeable number, because it can be changed into a prime (23751989) 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, 84689 + ... + 84968.

It is an arithmetic number, because the mean of its divisors is an integer number (2375212).

Almost surely, 2^23751980 is an apocalyptic number.

23751980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23751980 is an abundant number, since it is smaller than the sum of its proper divisors (33253108).

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

23751980 is a wasteful number, since it uses less digits than its factorization.

23751980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169673 (or 169671 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 23751980 is about 4873.6003118844. The cubic root of 23751980 is about 287.4528416665.

The spelling of 23751980 in words is "twenty-three million, seven hundred fifty-one thousand, nine hundred eighty".