85851228 has 12 divisors (see below), whose sum is σ = 200319560. Its totient is φ = 28617072.

The previous prime is 85851191. The next prime is 85851247. The reversal of 85851228 is 82215858.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3577123 + ... + 3577146.

Almost surely, 2^85851228 is an apocalyptic number.

It is an amenable number.

85851228 is an abundant number, since it is smaller than the sum of its proper divisors (114468332).

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

85851228 is a wasteful number, since it uses less digits than its factorization.

85851228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7154276 (or 7154274 counting only the distinct ones).

The product of its digits is 51200, while the sum is 39.

The square root of 85851228 is about 9265.5937748209. The cubic root of 85851228 is about 441.1458220675.

The spelling of 85851228 in words is "eighty-five million, eight hundred fifty-one thousand, two hundred twenty-eight".