128116285 has 8 divisors (see below), whose sum is σ = 167715936. Its totient is φ = 93175440.

The previous prime is 128116277. The next prime is 128116291. The reversal of 128116285 is 582611821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128116285 - 2³ = 128116277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128116285.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1164639 + ... + 1164748.

It is an arithmetic number, because the mean of its divisors is an integer number (20964492).

Almost surely, 2^128116285 is an apocalyptic number.

It is an amenable number.

128116285 is a deficient number, since it is larger than the sum of its proper divisors (39599651).

128116285 is a wasteful number, since it uses less digits than its factorization.

128116285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329403.

The product of its digits is 7680, while the sum is 34.

The square root of 128116285 is about 11318.8464518254. The cubic root of 128116285 is about 504.1209882650.

The spelling of 128116285 in words is "one hundred twenty-eight million, one hundred sixteen thousand, two hundred eighty-five".