2820370856 has 16 divisors (see below), whose sum is σ = 5599265940. Its totient is φ = 1327233280.

The previous prime is 2820370753. The next prime is 2820370859. The reversal of 2820370856 is 6580730282.

It can be written as a sum of positive squares in 2 ways, for example, as 2784250756 + 36120100 = 52766^2 + 6010^2 .

It is not an unprimeable number, because it can be changed into a prime (2820370859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10368875 + ... + 10369146.

Almost surely, 2^2820370856 is an apocalyptic number.

It is an amenable number.

2820370856 is a deficient number, since it is larger than the sum of its proper divisors (2778895084).

2820370856 is a wasteful number, since it uses less digits than its factorization.

2820370856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20738044 (or 20738040 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 2820370856 is about 53107.1638858638. The cubic root of 2820370856 is about 1412.8695740698.

The spelling of 2820370856 in words is "two billion, eight hundred twenty million, three hundred seventy thousand, eight hundred fifty-six".