128474664 has 32 divisors (see below), whose sum is σ = 331549440. Its totient is φ = 41443200.

The previous prime is 128474659. The next prime is 128474677. The reversal of 128474664 is 466474821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85597 + ... + 87084.

It is an arithmetic number, because the mean of its divisors is an integer number (10360920).

Almost surely, 2^128474664 is an apocalyptic number.

It is an amenable number.

128474664 is an abundant number, since it is smaller than the sum of its proper divisors (203074776).

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

128474664 is a wasteful number, since it uses less digits than its factorization.

128474664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172721 (or 172717 counting only the distinct ones).

The product of its digits is 258048, while the sum is 42.

The square root of 128474664 is about 11334.6664706113. Note that the first 3 decimals coincide. The cubic root of 128474664 is about 504.5906089639.

The spelling of 128474664 in words is "one hundred twenty-eight million, four hundred seventy-four thousand, six hundred sixty-four".