980000856 has 80 divisors (see below), whose sum is σ = 2791542600. Its totient is φ = 321117696.

The previous prime is 980000849. The next prime is 980000869. The reversal of 980000856 is 658000089.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 980000856.

It is a congruent 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 19 ways as a sum of consecutive naturals, for example, 25416 + ... + 51048.

Almost surely, 2^980000856 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 980000856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1395771300).

980000856 is an abundant number, since it is smaller than the sum of its proper divisors (1811541744).

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

980000856 is a wasteful number, since it uses less digits than its factorization.

980000856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25710 (or 25697 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 980000856 is about 31304.9653569526. The cubic root of 980000856 is about 993.2886775815.

The spelling of 980000856 in words is "nine hundred eighty million, eight hundred fifty-six", and thus it is an aban number.