23979980 has 12 divisors (see below), whose sum is σ = 50358000. Its totient is φ = 9591984.

The previous prime is 23979953. The next prime is 23979997. The reversal of 23979980 is 8997932.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 599480 + ... + 599519.

It is an arithmetic number, because the mean of its divisors is an integer number (4196500).

Almost surely, 2^23979980 is an apocalyptic number.

23979980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23979980 is an abundant number, since it is smaller than the sum of its proper divisors (26378020).

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

23979980 is a wasteful number, since it uses less digits than its factorization.

23979980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199008 (or 1199006 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 23979980 is about 4896.9357765852. The cubic root of 23979980 is about 288.3696866486.

The spelling of 23979980 in words is "twenty-three million, nine hundred seventy-nine thousand, nine hundred eighty".