870444234 has 72 divisors (see below), whose sum is σ = 2195034660. Its totient is φ = 248244480.

The previous prime is 870444187. The next prime is 870444241. The reversal of 870444234 is 432444078.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 688275225 + 182169009 = 26235^2 + 13497^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 25272 + ... + 48780.

Almost surely, 2^870444234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 870444234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1097517330).

870444234 is an abundant number, since it is smaller than the sum of its proper divisors (1324590426).

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

870444234 is a wasteful number, since it uses less digits than its factorization.

870444234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23556 (or 23542 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 36.

The square root of 870444234 is about 29503.2919180216. The cubic root of 870444234 is about 954.8027274516.

The spelling of 870444234 in words is "eight hundred seventy million, four hundred forty-four thousand, two hundred thirty-four".