128879514 has 48 divisors (see below), whose sum is σ = 287258400. Its totient is φ = 41737248.

The previous prime is 128879507. The next prime is 128879537. The reversal of 128879514 is 415978821.

128879514 is a `hidden beast` number, since 128 + 8 + 7 + 9 + 514 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 128879514.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 207897 + ... + 208515.

It is an arithmetic number, because the mean of its divisors is an integer number (5984550).

Almost surely, 2^128879514 is an apocalyptic number.

128879514 is an abundant number, since it is smaller than the sum of its proper divisors (158378886).

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

128879514 is a wasteful number, since it uses less digits than its factorization.

128879514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939 (or 936 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 128879514 is about 11352.5113521194. The cubic root of 128879514 is about 505.1200760117.

The spelling of 128879514 in words is "one hundred twenty-eight million, eight hundred seventy-nine thousand, five hundred fourteen".