845244 has 36 divisors (see below), whose sum is σ = 2181816. Its totient is φ = 275808.

The previous prime is 845237. The next prime is 845261. The reversal of 845244 is 442548.

It is a tau number, because it is divible by the number of its divisors (36).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1687 + ... + 2129.

It is an arithmetic number, because the mean of its divisors is an integer number (60606).

2⁸⁴⁵²⁴⁴ 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 845244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1090908).

845244 is an abundant number, since it is smaller than the sum of its proper divisors (1336572).

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

845244 is a wasteful number, since it uses less digits than its factorization.

845244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506 (or 501 counting only the distinct ones).

The product of its digits is 5120, while the sum is 27.

The square root of 845244 is about 919.3715244666. The cubic root of 845244 is about 94.5498183614.

It can be divided in two parts, 845 and 244, that added together give a square (1089 = 33²).

The spelling of 845244 in words is "eight hundred forty-five thousand, two hundred forty-four".