23900000 has 72 divisors (see below), whose sum is σ = 59058720. Its totient is φ = 9520000.

The previous prime is 23899991. The next prime is 23900027. The reversal of 23900000 is 932.

It is a happy number.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 99881 + ... + 100119.

It is an arithmetic number, because the mean of its divisors is an integer number (820260).

Almost surely, 2^23900000 is an apocalyptic number.

23900000 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 23900000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29529360).

23900000 is an abundant number, since it is smaller than the sum of its proper divisors (35158720).

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

23900000 is an frugal number, since it uses more digits than its factorization.

23900000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274 (or 246 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 23900000 is about 4888.7626246321. The cubic root of 23900000 is about 288.0487314658.

Adding to 23900000 its reverse (932), we get a palindrome (23900932).

The spelling of 23900000 in words is "twenty-three million, nine hundred thousand".