2820667456 has 28 divisors (see below), whose sum is σ = 5605916652. Its totient is φ = 1408153088.

The previous prime is 2820667433. The next prime is 2820667471. The reversal of 2820667456 is 6547660282.

It can be written as a sum of positive squares in 2 ways, for example, as 1704038400 + 1116629056 = 41280^2 + 33416^2 .

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, 8046 + ... + 75538.

It is an arithmetic number, because the mean of its divisors is an integer number (200211309).

Almost surely, 2^2820667456 is an apocalyptic number.

It is an amenable number.

2820667456 is a deficient number, since it is larger than the sum of its proper divisors (2785249196).

2820667456 is an equidigital number, since it uses as much as digits as its factorization.

2820667456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68158 (or 68148 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 46.

The square root of 2820667456 is about 53109.9562794021. The cubic root of 2820667456 is about 1412.9190997585.

The spelling of 2820667456 in words is "two billion, eight hundred twenty million, six hundred sixty-seven thousand, four hundred fifty-six".