986628820 has 24 divisors (see below), whose sum is σ = 2085124104. Its totient is φ = 392136576.

The previous prime is 986628809. The next prime is 986628833. The reversal of 986628820 is 28826689.

It can be written as a sum of positive squares in 4 ways, for example, as 115906756 + 870722064 = 10766^2 + 29508^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153967 + ... + 160246.

It is an arithmetic number, because the mean of its divisors is an integer number (86880171).

Almost surely, 2^986628820 is an apocalyptic number.

It is an amenable number.

986628820 is an abundant number, since it is smaller than the sum of its proper divisors (1098495284).

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

986628820 is a wasteful number, since it uses less digits than its factorization.

986628820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314379 (or 314377 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 49.

The square root of 986628820 is about 31410.6481945216. The cubic root of 986628820 is about 995.5229257190.

The spelling of 986628820 in words is "nine hundred eighty-six million, six hundred twenty-eight thousand, eight hundred twenty".