128285378 has 32 divisors (see below), whose sum is σ = 225200640. Its totient is φ = 54276480.

The previous prime is 128285317. The next prime is 128285429. The reversal of 128285378 is 873582821.

It is a super-3 number, since 3×128285378³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11126 + ... + 19502.

It is an arithmetic number, because the mean of its divisors is an integer number (7037520).

Almost surely, 2^128285378 is an apocalyptic number.

128285378 is a deficient number, since it is larger than the sum of its proper divisors (96915262).

128285378 is a wasteful number, since it uses less digits than its factorization.

128285378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8442.

The product of its digits is 215040, while the sum is 44.

The square root of 128285378 is about 11326.3135220600. The cubic root of 128285378 is about 504.3426771138.

The spelling of 128285378 in words is "one hundred twenty-eight million, two hundred eighty-five thousand, three hundred seventy-eight".