23157400 has 144 divisors (see below), whose sum is σ = 66792600. Its totient is φ = 7418880.

The previous prime is 23157397. The next prime is 23157401. The reversal of 23157400 is 475132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23157401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 166531 + ... + 166669.

Almost surely, 2^23157400 is an apocalyptic number.

23157400 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 23157400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33396300).

23157400 is an abundant number, since it is smaller than the sum of its proper divisors (43635200).

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

23157400 is a wasteful number, since it uses less digits than its factorization.

23157400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 23157400 is about 4812.2136278432. The cubic root of 23157400 is about 285.0339551213.

The spelling of 23157400 in words is "twenty-three million, one hundred fifty-seven thousand, four hundred".