2815281280 has 192 divisors, whose sum is σ = 7911691200. Its totient is φ = 955078656.

The previous prime is 2815281269. The next prime is 2815281299. The reversal of 2815281280 is 821825182.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3355101 + ... + 3355939.

It is an arithmetic number, because the mean of its divisors is an integer number (41206725).

Almost surely, 2^2815281280 is an apocalyptic number.

2815281280 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 2815281280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3955845600).

2815281280 is an abundant number, since it is smaller than the sum of its proper divisors (5096409920).

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

2815281280 is a wasteful number, since it uses less digits than its factorization.

2815281280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979 (or 960 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 37.

The square root of 2815281280 is about 53059.2242687358. The cubic root of 2815281280 is about 1412.0191850844.

The spelling of 2815281280 in words is "two billion, eight hundred fifteen million, two hundred eighty-one thousand, two hundred eighty".