128055578 has 16 divisors (see below), whose sum is σ = 222532800. Its totient is φ = 54128736.

The previous prime is 128055569. The next prime is 128055583. The reversal of 128055578 is 875550821.

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, 61628 + ... + 63671.

It is an arithmetic number, because the mean of its divisors is an integer number (13908300).

Almost surely, 2^128055578 is an apocalyptic number.

128055578 is a deficient number, since it is larger than the sum of its proper divisors (94477222).

128055578 is a wasteful number, since it uses less digits than its factorization.

128055578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125381.

The product of its (nonzero) digits is 112000, while the sum is 41.

The square root of 128055578 is about 11316.1644562104. The cubic root of 128055578 is about 504.0413509576.

The spelling of 128055578 in words is "one hundred twenty-eight million, fifty-five thousand, five hundred seventy-eight".