858975312 has 80 divisors (see below), whose sum is σ = 2416720320. Its totient is φ = 261313536.

The previous prime is 858975301. The next prime is 858975317. The reversal of 858975312 is 213579858.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (858975317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47803 + ... + 63269.

It is an arithmetic number, because the mean of its divisors is an integer number (30209004).

Almost surely, 2^858975312 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 858975312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1208360160).

858975312 is an abundant number, since it is smaller than the sum of its proper divisors (1557745008).

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

858975312 is a wasteful number, since it uses less digits than its factorization.

858975312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15580 (or 15574 counting only the distinct ones).

The product of its digits is 604800, while the sum is 48.

The square root of 858975312 is about 29308.2806046346. The cubic root of 858975312 is about 950.5906989315.

The spelling of 858975312 in words is "eight hundred fifty-eight million, nine hundred seventy-five thousand, three hundred twelve".