109107128 has 32 divisors (see below), whose sum is σ = 221205600. Its totient is φ = 50153088.

The previous prime is 109107127. The next prime is 109107161. The reversal of 109107128 is 821701901.

It is a self number, because there is not a number n which added to its sum of digits gives 109107128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109107127) 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, 25358 + ... + 29346.

It is an arithmetic number, because the mean of its divisors is an integer number (6912675).

Almost surely, 2^109107128 is an apocalyptic number.

It is an amenable number.

109107128 is an abundant number, since it is smaller than the sum of its proper divisors (112098472).

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

109107128 is a wasteful number, since it uses less digits than its factorization.

109107128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4271 (or 4267 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 29.

The square root of 109107128 is about 10445.4357496468. The cubic root of 109107128 is about 477.8420607615.

The spelling of 109107128 in words is "one hundred nine million, one hundred seven thousand, one hundred twenty-eight".