23117900 has 36 divisors (see below), whose sum is σ = 54027792. Its totient is φ = 8535360.

The previous prime is 23117869. The next prime is 23117903. The reversal of 23117900 is 971132.

It is not an unprimeable number, because it can be changed into a prime (23117903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7592 + ... + 10191.

It is an arithmetic number, because the mean of its divisors is an integer number (1500772).

Almost surely, 2^23117900 is an apocalyptic number.

23117900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23117900 is an abundant number, since it is smaller than the sum of its proper divisors (30909892).

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

23117900 is a wasteful number, since it uses less digits than its factorization.

23117900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17810 (or 17803 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 23117900 is about 4808.1077358978. The cubic root of 23117900 is about 284.8718003490.

The spelling of 23117900 in words is "twenty-three million, one hundred seventeen thousand, nine hundred".