128850918 has 16 divisors (see below), whose sum is σ = 294516480. Its totient is φ = 36814536.

The previous prime is 128850901. The next prime is 128850937. The reversal of 128850918 is 819058821.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 3067879 = 128850918 / (1 + 2 + 8 + 8 + 5 + 0 + 9 + 1 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 128850918.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1533898 + ... + 1533981.

It is an arithmetic number, because the mean of its divisors is an integer number (18407280).

Almost surely, 2^128850918 is an apocalyptic number.

128850918 is an abundant number, since it is smaller than the sum of its proper divisors (165665562).

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

128850918 is a wasteful number, since it uses less digits than its factorization.

128850918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3067891.

The product of its (nonzero) digits is 46080, while the sum is 42.

The square root of 128850918 is about 11351.2518252394. The cubic root of 128850918 is about 505.0827142886.

The spelling of 128850918 in words is "one hundred twenty-eight million, eight hundred fifty thousand, nine hundred eighteen".