85044228 has 48 divisors (see below), whose sum is σ = 209664000. Its totient is φ = 26755488.

The previous prime is 85044221. The next prime is 85044259. The reversal of 85044228 is 82244058.

It is a happy number.

It is a super-2 number, since 2×85044228² = 14465041432231968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85044221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81333 + ... + 82371.

It is an arithmetic number, because the mean of its divisors is an integer number (4368000).

Almost surely, 2^85044228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85044228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104832000).

85044228 is an abundant number, since it is smaller than the sum of its proper divisors (124619772).

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

85044228 is a wasteful number, since it uses less digits than its factorization.

85044228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424 (or 1422 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 33.

The square root of 85044228 is about 9221.9427454306. The cubic root of 85044228 is about 439.7592139861.

The spelling of 85044228 in words is "eighty-five million, forty-four thousand, two hundred twenty-eight".