816316980 has 48 divisors (see below), whose sum is σ = 2288430144. Its totient is φ = 217423360.

The previous prime is 816316957. The next prime is 816316997. The reversal of 816316980 is 89613618.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45139 + ... + 60581.

It is an arithmetic number, because the mean of its divisors is an integer number (47675628).

Almost surely, 2^816316980 is an apocalyptic number.

It is an amenable number.

816316980 is an abundant number, since it is smaller than the sum of its proper divisors (1472113164).

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

816316980 is a wasteful number, since it uses less digits than its factorization.

816316980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16336 (or 16334 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 816316980 is about 28571.2614352254. The cubic root of 816316980 is about 934.5867295787.

The spelling of 816316980 in words is "eight hundred sixteen million, three hundred sixteen thousand, nine hundred eighty".