128864704 has 14 divisors (see below), whose sum is σ = 255716024. Its totient is φ = 64432320.

The previous prime is 128864693. The next prime is 128864711. The reversal of 128864704 is 407468821.

It is a super-2 number, since 2×128864704² = 33212223874015232, which contains 22 as substring.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 1006692 + ... + 1006819.

Almost surely, 2^128864704 is an apocalyptic number.

It is an amenable number.

128864704 is a deficient number, since it is larger than the sum of its proper divisors (126851320).

128864704 is an equidigital number, since it uses as much as digits as its factorization.

128864704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2013523 (or 2013513 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 128864704 is about 11351.8590547980. The cubic root of 128864704 is about 505.1007268933.

The spelling of 128864704 in words is "one hundred twenty-eight million, eight hundred sixty-four thousand, seven hundred four".