2628017281 has 16 divisors (see below), whose sum is σ = 2858352640. Its totient is φ = 2407041360.

The previous prime is 2628017257. The next prime is 2628017309. The reversal of 2628017281 is 1827108262.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2628017281 is a prime.

It is a super-2 number, since 2×2628017281² = 13812949658469265922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2628017281.

It is not an unprimeable number, because it can be changed into a prime (2628012281) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 978166 + ... + 980848.

It is an arithmetic number, because the mean of its divisors is an integer number (178647040).

Almost surely, 2^2628017281 is an apocalyptic number.

It is an amenable number.

2628017281 is a deficient number, since it is larger than the sum of its proper divisors (230335359).

2628017281 is a wasteful number, since it uses less digits than its factorization.

2628017281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4396.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 2628017281 is about 51264.1910206335. The cubic root of 2628017281 is about 1379.9904222888.

The spelling of 2628017281 in words is "two billion, six hundred twenty-eight million, seventeen thousand, two hundred eighty-one".