23188900 has 72 divisors (see below), whose sum is σ = 58149056. Its totient is φ = 7862400.

The previous prime is 23188889. The next prime is 23188909. The reversal of 23188900 is 988132.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (23188909) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109795 + ... + 110005.

Almost surely, 2^23188900 is an apocalyptic number.

23188900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23188900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29074528).

23188900 is an abundant number, since it is smaller than the sum of its proper divisors (34960156).

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

23188900 is a wasteful number, since it uses less digits than its factorization.

23188900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 23188900 is about 4815.4854376272. The cubic root of 23188900 is about 285.1631363133.

The spelling of 23188900 in words is "twenty-three million, one hundred eighty-eight thousand, nine hundred".