858982860 has 96 divisors (see below), whose sum is σ = 2676710400. Its totient is φ = 228692160.

The previous prime is 858982807. The next prime is 858982961. The reversal of 858982860 is 68289858.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 858982797 and 858982806.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 560295 + ... + 561825.

It is an arithmetic number, because the mean of its divisors is an integer number (27882400).

Almost surely, 2^858982860 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 858982860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1338355200).

858982860 is an abundant number, since it is smaller than the sum of its proper divisors (1817727540).

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

858982860 is a wasteful number, since it uses less digits than its factorization.

858982860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2588 (or 2580 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 54.

The square root of 858982860 is about 29308.4093734205. The cubic root of 858982860 is about 950.5934832713.

The spelling of 858982860 in words is "eight hundred fifty-eight million, nine hundred eighty-two thousand, eight hundred sixty".