128600885 has 16 divisors (see below), whose sum is σ = 176906496. Its totient is φ = 87913728.

The previous prime is 128600833. The next prime is 128600891. The reversal of 128600885 is 588006821.

It is not a de Polignac number, because 128600885 - 2⁶ = 128600821 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6344 + ... + 17246.

It is an arithmetic number, because the mean of its divisors is an integer number (11056656).

Almost surely, 2^128600885 is an apocalyptic number.

It is an amenable number.

128600885 is a deficient number, since it is larger than the sum of its proper divisors (48305611).

128600885 is a wasteful number, since it uses less digits than its factorization.

128600885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11252.

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 128600885 is about 11340.2330222972. The cubic root of 128600885 is about 504.7558012882.

The spelling of 128600885 in words is "one hundred twenty-eight million, six hundred thousand, eight hundred eighty-five".