2628894868 has 12 divisors (see below), whose sum is σ = 4623920532. Its totient is φ = 1307774720.

The previous prime is 2628894839. The next prime is 2628894883. The reversal of 2628894868 is 8684988262.

It can be written as a sum of positive squares in 2 ways, for example, as 1852269444 + 776625424 = 43038^2 + 27868^2 .

It is a super-2 number, since 2×2628894868² = 13822176453993474848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1667293 + ... + 1668868.

It is an arithmetic number, because the mean of its divisors is an integer number (385326711).

Almost surely, 2^2628894868 is an apocalyptic number.

It is an amenable number.

2628894868 is a deficient number, since it is larger than the sum of its proper divisors (1995025664).

2628894868 is a wasteful number, since it uses less digits than its factorization.

2628894868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3336362 (or 3336360 counting only the distinct ones).

The product of its digits is 21233664, while the sum is 61.

The square root of 2628894868 is about 51272.7497604722. The cubic root of 2628894868 is about 1380.1440142360.

The spelling of 2628894868 in words is "two billion, six hundred twenty-eight million, eight hundred ninety-four thousand, eight hundred sixty-eight".