85981128 has 16 divisors (see below), whose sum is σ = 214952880. Its totient is φ = 28660368.

The previous prime is 85981117. The next prime is 85981171. The reversal of 85981128 is 82118958.

It is a self number, because there is not a number n which added to its sum of digits gives 85981128.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1791250 + ... + 1791297.

It is an arithmetic number, because the mean of its divisors is an integer number (13434555).

Almost surely, 2^85981128 is an apocalyptic number.

It is an amenable number.

85981128 is an abundant number, since it is smaller than the sum of its proper divisors (128971752).

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

85981128 is a wasteful number, since it uses less digits than its factorization.

85981128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3582556 (or 3582552 counting only the distinct ones).

The product of its digits is 46080, while the sum is 42.

The square root of 85981128 is about 9272.6009296206. The cubic root of 85981128 is about 441.3682066335.

The spelling of 85981128 in words is "eighty-five million, nine hundred eighty-one thousand, one hundred twenty-eight".