2820408816 has 20 divisors (see below), whose sum is σ = 7286056232. Its totient is φ = 940136256.

The previous prime is 2820408809. The next prime is 2820408839. The reversal of 2820408816 is 6188040282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29379211 + ... + 29379306.

Almost surely, 2^2820408816 is an apocalyptic number.

It is an amenable number.

2820408816 is an abundant number, since it is smaller than the sum of its proper divisors (4465647416).

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

2820408816 is a wasteful number, since it uses less digits than its factorization.

2820408816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58758528 (or 58758522 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 39.

The square root of 2820408816 is about 53107.5212752393. The cubic root of 2820408816 is about 1412.8759127502.

The spelling of 2820408816 in words is "two billion, eight hundred twenty million, four hundred eight thousand, eight hundred sixteen".