2628711281 has 12 divisors (see below), whose sum is σ = 3058785072. Its totient is φ = 2252520648.

The previous prime is 2628711277. The next prime is 2628711301. The reversal of 2628711281 is 1821178262.

It is not a de Polignac number, because 2628711281 - 2² = 2628711277 is a prime.

It is a super-2 number, since 2×2628711281² = 13820245997713321922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2628711221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 239786 + ... + 250508.

It is an arithmetic number, because the mean of its divisors is an integer number (254898756).

Almost surely, 2^2628711281 is an apocalyptic number.

It is an amenable number.

2628711281 is a deficient number, since it is larger than the sum of its proper divisors (430073791).

2628711281 is a wasteful number, since it uses less digits than its factorization.

2628711281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15740 (or 15733 counting only the distinct ones).

The product of its digits is 21504, while the sum is 38.

The square root of 2628711281 is about 51270.9594312414. The cubic root of 2628711281 is about 1380.1118863635. Note that the first 3 decimals are identical.

The spelling of 2628711281 in words is "two billion, six hundred twenty-eight million, seven hundred eleven thousand, two hundred eighty-one".