2628728268 has 24 divisors (see below), whose sum is σ = 6180525120. Its totient is φ = 869553360.

The previous prime is 2628728231. The next prime is 2628728273. The reversal of 2628728268 is 8628278262.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2628728268.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 834538 + ... + 837681.

It is an arithmetic number, because the mean of its divisors is an integer number (257521880).

Almost surely, 2^2628728268 is an apocalyptic number.

It is an amenable number.

2628728268 is an abundant number, since it is smaller than the sum of its proper divisors (3551796852).

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

2628728268 is a wasteful number, since it uses less digits than its factorization.

2628728268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1672357 (or 1672355 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 51.

The square root of 2628728268 is about 51271.1250900543. The cubic root of 2628728268 is about 1380.1148591649.

The spelling of 2628728268 in words is "two billion, six hundred twenty-eight million, seven hundred twenty-eight thousand, two hundred sixty-eight".