2889640056 has 32 divisors (see below), whose sum is σ = 7230787200. Its totient is φ = 962321760.

The previous prime is 2889640049. The next prime is 2889640067. The reversal of 2889640056 is 6500469882.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2889639987 and 2889640014.

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, 28996 + ... + 81363.

It is an arithmetic number, because the mean of its divisors is an integer number (225962100).

Almost surely, 2^2889640056 is an apocalyptic number.

It is an amenable number.

2889640056 is an abundant number, since it is smaller than the sum of its proper divisors (4341147144).

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

2889640056 is a wasteful number, since it uses less digits than its factorization.

2889640056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111459 (or 111455 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The square root of 2889640056 is about 53755.3723454689. The cubic root of 2889640056 is about 1424.3429914330.

The spelling of 2889640056 in words is "two billion, eight hundred eighty-nine million, six hundred forty thousand, fifty-six".