128955584 has 56 divisors (see below), whose sum is σ = 271363440. Its totient is φ = 60632064.

The previous prime is 128955569. The next prime is 128955599. The reversal of 128955584 is 485559821.

It is an interprime number because it is at equal distance from previous prime (128955569) and next prime (128955599).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210062 + ... + 210674.

Almost surely, 2^128955584 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128955584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135681720).

128955584 is an abundant number, since it is smaller than the sum of its proper divisors (142407856).

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

128955584 is a wasteful number, since it uses less digits than its factorization.

128955584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817 (or 807 counting only the distinct ones).

The product of its digits is 576000, while the sum is 47.

The square root of 128955584 is about 11355.8612178910. The cubic root of 128955584 is about 505.2194373597.

The spelling of 128955584 in words is "one hundred twenty-eight million, nine hundred fifty-five thousand, five hundred eighty-four".