13115800 has 24 divisors (see below), whose sum is σ = 30494700. Its totient is φ = 5246240.

The previous prime is 13115783. The next prime is 13115813. The reversal of 13115800 is 851131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32590 + ... + 32989.

Almost surely, 2^13115800 is an apocalyptic number.

13115800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13115800 is an abundant number, since it is smaller than the sum of its proper divisors (17378900).

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

13115800 is a wasteful number, since it uses less digits than its factorization.

13115800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65595 (or 65586 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 13115800 is about 3621.5742433367. The cubic root of 13115800 is about 235.8295714861.

Adding to 13115800 its reverse (851131), we get a palindrome (13966931).

It can be divided in two parts, 131 and 15800, that added together give a triangular number (15931 = T₁₇₈).

The spelling of 13115800 in words is "thirteen million, one hundred fifteen thousand, eight hundred".