128352656 has 10 divisors (see below), whose sum is σ = 248683302. Its totient is φ = 64176320.

The previous prime is 128352649. The next prime is 128352661. The reversal of 128352656 is 656253821.

It can be written as a sum of positive squares in only one way, i.e., 92544400 + 35808256 = 9620^2 + 5984^2 .

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 as a sum of consecutive naturals, namely, 4011005 + ... + 4011036.

Almost surely, 2^128352656 is an apocalyptic number.

128352656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

128352656 is a deficient number, since it is larger than the sum of its proper divisors (120330646).

128352656 is an equidigital number, since it uses as much as digits as its factorization.

128352656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8022049 (or 8022043 counting only the distinct ones).

The product of its digits is 86400, while the sum is 38.

The square root of 128352656 is about 11329.2831194211. The cubic root of 128352656 is about 504.4308275517.

The spelling of 128352656 in words is "one hundred twenty-eight million, three hundred fifty-two thousand, six hundred fifty-six".