128459556 has 27 divisors (see below), whose sum is σ = 324889201. Its totient is φ = 42797184.

The previous prime is 128459549. The next prime is 128459561. The reversal of 128459556 is 655954821.

The square root of 128459556 is 11334.

It is a perfect power (a square), and thus also a powerful number.

128459556 is a `hidden beast` number, since 1 + 2 + 8 + 4 + 595 + 56 = 666.

It can be written as a sum of positive squares in only one way, i.e., 61873956 + 66585600 = 7866^2 + 8160^2 .

It is a Duffinian number.

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 8 ways as a sum of consecutive naturals, for example, 67060 + ... + 68948.

Almost surely, 2^128459556 is an apocalyptic number.

128459556 is the 11334-th square number.

It is an amenable number.

128459556 is an abundant number, since it is smaller than the sum of its proper divisors (196429645).

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

128459556 is an equidigital number, since it uses as much as digits as its factorization.

128459556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3788 (or 1894 counting only the distinct ones).

The product of its digits is 432000, while the sum is 45.

The cubic root of 128459556 is about 504.5708290490.

It can be divided in two parts, 128 and 459556, that added together give a square (459684 = 678²).

The spelling of 128459556 in words is "one hundred twenty-eight million, four hundred fifty-nine thousand, five hundred fifty-six".