2808160056 has 128 divisors (see below), whose sum is σ = 8559432000. Its totient is φ = 847701504.

The previous prime is 2808160039. The next prime is 2808160063. The reversal of 2808160056 is 6500618082.

It is a happy number.

2808160056 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2808160056² = 15771525800227846272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2808160056.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 139390 + ... + 158258.

Almost surely, 2^2808160056 is an apocalyptic number.

2808160056 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2808160056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4279716000).

2808160056 is an abundant number, since it is smaller than the sum of its proper divisors (5751271944).

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

2808160056 is a wasteful number, since it uses less digits than its factorization.

2808160056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18950 (or 18940 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 2808160056 is about 52992.0754075550. The cubic root of 2808160056 is about 1410.8276173386.

The spelling of 2808160056 in words is "two billion, eight hundred eight million, one hundred sixty thousand, fifty-six".