2808227880 has 80 divisors (see below), whose sum is σ = 9438776820. Its totient is φ = 748859904.

The previous prime is 2808227879. The next prime is 2808227899. The reversal of 2808227880 is 887228082.

It can be written as a sum of positive squares in 2 ways, for example, as 2722961124 + 85266756 = 52182^2 + 9234^2 .

It is a super-2 number, since 2×2808227880² = 15772287652018588800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 430129 + ... + 436608.

Almost surely, 2^2808227880 is an apocalyptic number.

2808227880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2808227880 is an abundant number, since it is smaller than the sum of its proper divisors (6630548940).

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

2808227880 is a wasteful number, since it uses less digits than its factorization.

2808227880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866760 (or 866747 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 45.

The square root of 2808227880 is about 52992.7153484326. The cubic root of 2808227880 is about 1410.8389755708.

The spelling of 2808227880 in words is "two billion, eight hundred eight million, two hundred twenty-seven thousand, eight hundred eighty".