23319900 has 90 divisors (see below), whose sum is σ = 75620160. Its totient is φ = 6216480.

The previous prime is 23319899. The next prime is 23319913. The reversal of 23319900 is 991332.

It is a tau number, because it is divible by the number of its divisors (90).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 6661 + ... + 9539.

It is an arithmetic number, because the mean of its divisors is an integer number (840224).

Almost surely, 2^23319900 is an apocalyptic number.

23319900 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 23319900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37810080).

23319900 is an abundant number, since it is smaller than the sum of its proper divisors (52300260).

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

23319900 is a wasteful number, since it uses less digits than its factorization.

23319900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2905 (or 2889 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 23319900 is about 4829.0682331067. The cubic root of 23319900 is about 285.6991146706.

The spelling of 23319900 in words is "twenty-three million, three hundred nineteen thousand, nine hundred".