2820205670 has 16 divisors (see below), whose sum is σ = 5077395360. Its totient is φ = 1127854464.

The previous prime is 2820205669. The next prime is 2820205721. The reversal of 2820205670 is 765020282.

It is a super-2 number, since 2×2820205670² = 15907120042200297800, which contains 22 as substring.

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, 29054 + ... + 80526.

It is an arithmetic number, because the mean of its divisors is an integer number (317337210).

Almost surely, 2^2820205670 is an apocalyptic number.

2820205670 is a deficient number, since it is larger than the sum of its proper divisors (2257189690).

2820205670 is a wasteful number, since it uses less digits than its factorization.

2820205670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56959.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 2820205670 is about 53105.6086491813. The cubic root of 2820205670 is about 1412.8419901288.

The spelling of 2820205670 in words is "two billion, eight hundred twenty million, two hundred five thousand, six hundred seventy".