858312228 has 24 divisors (see below), whose sum is σ = 2018501632. Its totient is φ = 283850784.

The previous prime is 858312211. The next prime is 858312233. The reversal of 858312228 is 822213858.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280075 + ... + 283122.

Almost surely, 2^858312228 is an apocalyptic number.

It is an amenable number.

858312228 is an abundant number, since it is smaller than the sum of its proper divisors (1160189404).

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

858312228 is a wasteful number, since it uses less digits than its factorization.

858312228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563331 (or 563329 counting only the distinct ones).

The product of its digits is 61440, while the sum is 39.

The square root of 858312228 is about 29296.9661910581. The cubic root of 858312228 is about 950.3460338693.

The spelling of 858312228 in words is "eight hundred fifty-eight million, three hundred twelve thousand, two hundred twenty-eight".