2113288856 has 64 divisors (see below), whose sum is σ = 4656960000. Its totient is φ = 898628640.

The previous prime is 2113288799. The next prime is 2113288867. The reversal of 2113288856 is 6588823112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356525 + ... + 362403.

It is an arithmetic number, because the mean of its divisors is an integer number (72765000).

Almost surely, 2^2113288856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2113288856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2328480000).

2113288856 is an abundant number, since it is smaller than the sum of its proper divisors (2543671144).

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

2113288856 is a wasteful number, since it uses less digits than its factorization.

2113288856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6037 (or 6019 counting only the distinct ones).

The product of its digits is 184320, while the sum is 44.

The square root of 2113288856 is about 45970.5215980850. The cubic root of 2113288856 is about 1283.2746669233.

The spelling of 2113288856 in words is "two billion, one hundred thirteen million, two hundred eighty-eight thousand, eight hundred fifty-six".