128324656 has 40 divisors (see below), whose sum is σ = 253844864. Its totient is φ = 62830080.

The previous prime is 128324627. The next prime is 128324671. The reversal of 128324656 is 656423821.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 211105 + ... + 211711.

Almost surely, 2^128324656 is an apocalyptic number.

128324656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

128324656 is a deficient number, since it is larger than the sum of its proper divisors (125520208).

128324656 is a wasteful number, since it uses less digits than its factorization.

128324656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869 (or 863 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 128324656 is about 11328.0473162854. The cubic root of 128324656 is about 504.3941445286.

The spelling of 128324656 in words is "one hundred twenty-eight million, three hundred twenty-four thousand, six hundred fifty-six".