128565284 has 12 divisors (see below), whose sum is σ = 226337664. Its totient is φ = 63897384.

The previous prime is 128565263. The next prime is 128565287. The reversal of 128565284 is 482565821.

It is a happy number.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (128565287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95564 + ... + 96899.

It is an arithmetic number, because the mean of its divisors is an integer number (18861472).

Almost surely, 2^128565284 is an apocalyptic number.

It is an amenable number.

128565284 is a deficient number, since it is larger than the sum of its proper divisors (97772380).

128565284 is a wasteful number, since it uses less digits than its factorization.

128565284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192634 (or 192632 counting only the distinct ones).

The product of its digits is 153600, while the sum is 41.

The square root of 128565284 is about 11338.6632369076. The cubic root of 128565284 is about 504.7092192610.

The spelling of 128565284 in words is "one hundred twenty-eight million, five hundred sixty-five thousand, two hundred eighty-four".