23655980 has 24 divisors (see below), whose sum is σ = 50062320. Its totient is φ = 9389120.

The previous prime is 23655971. The next prime is 23656019. The reversal of 23655980 is 8955632.

It is an unprimeable number.

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, 1895 + ... + 7134.

It is an arithmetic number, because the mean of its divisors is an integer number (2085930).

Almost surely, 2^23655980 is an apocalyptic number.

23655980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23655980 is an abundant number, since it is smaller than the sum of its proper divisors (26406340).

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

23655980 is a wasteful number, since it uses less digits than its factorization.

23655980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9169 (or 9167 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 23655980 is about 4863.7413582550. The cubic root of 23655980 is about 287.0650461413.

The spelling of 23655980 in words is "twenty-three million, six hundred fifty-five thousand, nine hundred eighty".