128285356 has 12 divisors (see below), whose sum is σ = 227661840. Its totient is φ = 63239120.

The previous prime is 128285317. The next prime is 128285429. The reversal of 128285356 is 653582821.

It is a super-3 number, since 3×128285356³ (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 3 ways as a sum of consecutive naturals, for example, 225571 + ... + 226138.

It is an arithmetic number, because the mean of its divisors is an integer number (18971820).

Almost surely, 2^128285356 is an apocalyptic number.

It is an amenable number.

128285356 is a deficient number, since it is larger than the sum of its proper divisors (99376484).

128285356 is a wasteful number, since it uses less digits than its factorization.

128285356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451784 (or 451782 counting only the distinct ones).

The product of its digits is 115200, while the sum is 40.

The square root of 128285356 is about 11326.3125508702. The cubic root of 128285356 is about 504.3426482835.

The spelling of 128285356 in words is "one hundred twenty-eight million, two hundred eighty-five thousand, three hundred fifty-six".