23939980 has 12 divisors (see below), whose sum is σ = 50274000. Its totient is φ = 9575984.

The previous prime is 23939969. The next prime is 23939989. The reversal of 23939980 is 8993932.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (23939989) 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 3 ways as a sum of consecutive naturals, for example, 598480 + ... + 598519.

It is an arithmetic number, because the mean of its divisors is an integer number (4189500).

Almost surely, 2^23939980 is an apocalyptic number.

23939980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23939980 is an abundant number, since it is smaller than the sum of its proper divisors (26334020).

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

23939980 is a wasteful number, since it uses less digits than its factorization.

23939980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197008 (or 1197006 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 23939980 is about 4892.8498852918. The cubic root of 23939980 is about 288.2092582832.

The spelling of 23939980 in words is "twenty-three million, nine hundred thirty-nine thousand, nine hundred eighty".