85028904 has 24 divisors (see below), whose sum is σ = 230286810. Its totient is φ = 28342944.

The previous prime is 85028903. The next prime is 85028929. The reversal of 85028904 is 40982058.

It can be written as a sum of positive squares in only one way, i.e., 72284004 + 12744900 = 8502^2 + 3570^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (85028903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 590407 + ... + 590550.

Almost surely, 2^85028904 is an apocalyptic number.

It is an amenable number.

85028904 is an abundant number, since it is smaller than the sum of its proper divisors (145257906).

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

85028904 is a wasteful number, since it uses less digits than its factorization.

85028904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180969 (or 1180962 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 85028904 is about 9221.1118635444. Note that the first 3 decimals coincide. The cubic root of 85028904 is about 439.7327992011.

The spelling of 85028904 in words is "eighty-five million, twenty-eight thousand, nine hundred four".