23137400 has 96 divisors (see below), whose sum is σ = 63277200. Its totient is φ = 7756800.

The previous prime is 23137399. The next prime is 23137403. The reversal of 23137400 is 473132.

23137400 = 950² + 951² + ... + 974².

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23137403) 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, 28196 + ... + 29004.

Almost surely, 2^23137400 is an apocalyptic number.

23137400 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 23137400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31638600).

23137400 is an abundant number, since it is smaller than the sum of its proper divisors (40139800).

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

23137400 is a wasteful number, since it uses less digits than its factorization.

23137400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849 (or 840 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 23137400 is about 4810.1351332369. The cubic root of 23137400 is about 284.9518745045.

The spelling of 23137400 in words is "twenty-three million, one hundred thirty-seven thousand, four hundred".