870044 has 36 divisors (see below), whose sum is σ = 1857744. Its totient is φ = 354816.

The previous prime is 870031. The next prime is 870047. The reversal of 870044 is 440078.

870044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a plaindrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 870044.

It is not an unprimeable number, because it can be changed into a prime (870047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4412 + ... + 4604.

It is an arithmetic number, because the mean of its divisors is an integer number (51604).

2⁸⁷⁰⁰⁴⁴ 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 870044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (928872).

870044 is an abundant number, since it is smaller than the sum of its proper divisors (987700).

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

870044 is a wasteful number, since it uses less digits than its factorization.

870044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 870044 is about 932.7614914864. The cubic root of 870044 is about 95.4656364217.

The spelling of 870044 in words is "eight hundred seventy thousand, forty-four".