2821391676 has 30 divisors (see below), whose sum is σ = 7375676000. Its totient is φ = 940463784.

The previous prime is 2821391647. The next prime is 2821391743. The reversal of 2821391676 is 6761931282.

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 9 ways as a sum of consecutive naturals, for example, 4353676 + ... + 4354323.

Almost surely, 2^2821391676 is an apocalyptic number.

It is an amenable number.

2821391676 is an abundant number, since it is smaller than the sum of its proper divisors (4554284324).

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

2821391676 is a wasteful number, since it uses less digits than its factorization.

2821391676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8708015 (or 8708004 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 2821391676 is about 53116.7739607744. The cubic root of 2821391676 is about 1413.0400140128.

The spelling of 2821391676 in words is "two billion, eight hundred twenty-one million, three hundred ninety-one thousand, six hundred seventy-six".