128616136 has 32 divisors (see below), whose sum is σ = 266263200. Its totient is φ = 57754240.

The previous prime is 128616133. The next prime is 128616151. The reversal of 128616136 is 631616821.

It is a happy number.

It is a super-2 number, since 2×128616136² = 33084220879140992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128616133) 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 7 ways as a sum of consecutive naturals, for example, 1501 + ... + 16108.

It is an arithmetic number, because the mean of its divisors is an integer number (8320725).

Almost surely, 2^128616136 is an apocalyptic number.

It is an amenable number.

128616136 is an abundant number, since it is smaller than the sum of its proper divisors (137647064).

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

128616136 is a wasteful number, since it uses less digits than its factorization.

128616136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17709 (or 17705 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 128616136 is about 11340.9054312255. The cubic root of 128616136 is about 504.7757537855.

The spelling of 128616136 in words is "one hundred twenty-eight million, six hundred sixteen thousand, one hundred thirty-six".