2808255280 has 80 divisors (see below), whose sum is σ = 6782137344. Its totient is φ = 1080241920.

The previous prime is 2808255259. The next prime is 2808255287. The reversal of 2808255280 is 825528082.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (2808255287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 400767 + ... + 407713.

Almost surely, 2^2808255280 is an apocalyptic number.

2808255280 is a gapful number since it is divisible by the number (20) 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 2808255280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3391068672).

2808255280 is an abundant number, since it is smaller than the sum of its proper divisors (3973882064).

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

2808255280 is a wasteful number, since it uses less digits than its factorization.

2808255280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7154 (or 7148 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 40.

The square root of 2808255280 is about 52992.9738739014. The cubic root of 2808255280 is about 1410.8435640947.

The spelling of 2808255280 in words is "two billion, eight hundred eight million, two hundred fifty-five thousand, two hundred eighty".