13157800 has 24 divisors (see below), whose sum is σ = 30592350. Its totient is φ = 5263040.

The previous prime is 13157797. The next prime is 13157801. The reversal of 13157800 is 875131.

It can be written as a sum of positive squares in 3 ways, for example, as 10355524 + 2802276 = 3218^2 + 1674^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (13157801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32695 + ... + 33094.

Almost surely, 2^13157800 is an apocalyptic number.

13157800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13157800 is an abundant number, since it is smaller than the sum of its proper divisors (17434550).

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

13157800 is a wasteful number, since it uses less digits than its factorization.

13157800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65805 (or 65796 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 13157800 is about 3627.3681919541. The cubic root of 13157800 is about 236.0810312571.

The spelling of 13157800 in words is "thirteen million, one hundred fifty-seven thousand, eight hundred".