851244 has 12 divisors (see below), whose sum is σ = 1986264. Its totient is φ = 283744.

The previous prime is 851239. The next prime is 851251. The reversal of 851244 is 442158.

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

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, 35457 + ... + 35480.

It is an arithmetic number, because the mean of its divisors is an integer number (165522).

2⁸⁵¹²⁴⁴ is an apocalyptic number.

It is an amenable number.

851244 is an abundant number, since it is smaller than the sum of its proper divisors (1135020).

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

851244 is a wasteful number, since it uses less digits than its factorization.

851244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70944 (or 70942 counting only the distinct ones).

The product of its digits is 1280, while the sum is 24.

The square root of 851244 is about 922.6288527897. The cubic root of 851244 is about 94.7730130236.

The spelling of 851244 in words is "eight hundred fifty-one thousand, two hundred forty-four".