13157500 has 60 divisors (see below), whose sum is σ = 30396520. Its totient is φ = 4968000.

The previous prime is 13157497. The next prime is 13157537. The reversal of 13157500 is 575131.

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 47362 + ... + 47638.

Almost surely, 2^13157500 is an apocalyptic number.

13157500 is a gapful number since it is divisible by the number (10) 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 13157500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15198260).

13157500 is an abundant number, since it is smaller than the sum of its proper divisors (17239020).

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

13157500 is a wasteful number, since it uses less digits than its factorization.

13157500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 525, while the sum is 22.

The square root of 13157500 is about 3627.3268394232. The cubic root of 13157500 is about 236.0792370148.

The spelling of 13157500 in words is "thirteen million, one hundred fifty-seven thousand, five hundred".