13128136 has 16 divisors (see below), whose sum is σ = 28131840. Its totient is φ = 5626320.

The previous prime is 13128103. The next prime is 13128139. The reversal of 13128136 is 63182131.

It is a self number, because there is not a number n which added to its sum of digits gives 13128136.

It is not an unprimeable number, because it can be changed into a prime (13128139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117160 + ... + 117271.

It is an arithmetic number, because the mean of its divisors is an integer number (1758240).

Almost surely, 2^13128136 is an apocalyptic number.

It is an amenable number.

13128136 is an abundant number, since it is smaller than the sum of its proper divisors (15003704).

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

13128136 is a wasteful number, since it uses less digits than its factorization.

13128136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234444 (or 234440 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

The square root of 13128136 is about 3623.2769698161. The cubic root of 13128136 is about 235.9034844256.

The spelling of 13128136 in words is "thirteen million, one hundred twenty-eight thousand, one hundred thirty-six".