85218804 has 60 divisors (see below), whose sum is σ = 243041568. Its totient is φ = 25822800.

The previous prime is 85218803. The next prime is 85218811. The reversal of 85218804 is 40881258.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85218803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8392 + ... + 15519.

Almost surely, 2^85218804 is an apocalyptic number.

It is an amenable number.

85218804 is an abundant number, since it is smaller than the sum of its proper divisors (157822764).

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

85218804 is a wasteful number, since it uses less digits than its factorization.

85218804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23938 (or 23927 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 85218804 is about 9231.4031436180. The cubic root of 85218804 is about 440.0599160831.

The spelling of 85218804 in words is "eighty-five million, two hundred eighteen thousand, eight hundred four".