13128700 has 36 divisors (see below), whose sum is σ = 30683800. Its totient is φ = 4847040.

The previous prime is 13128667. The next prime is 13128701. The reversal of 13128700 is 782131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13128701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3750 + ... + 6349.

Almost surely, 2^13128700 is an apocalyptic number.

13128700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13128700 is an abundant number, since it is smaller than the sum of its proper divisors (17555100).

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

13128700 is a wasteful number, since it uses less digits than its factorization.

13128700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10126 (or 10119 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 13128700 is about 3623.3547990778. The cubic root of 13128700 is about 235.9068626066.

The spelling of 13128700 in words is "thirteen million, one hundred twenty-eight thousand, seven hundred".