2728628650 has 36 divisors (see below), whose sum is σ = 5578592166. Its totient is φ = 992226400.

The previous prime is 2728628633. The next prime is 2728628657. The reversal of 2728628650 is 568268272.

It can be written as a sum of positive squares in 3 ways, for example, as 2473172361 + 255456289 = 49731^2 + 15983^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2728628650.

It is not an unprimeable number, because it can be changed into a prime (2728628657) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 219457 + ... + 231556.

Almost surely, 2^2728628650 is an apocalyptic number.

2728628650 is an abundant number, since it is smaller than the sum of its proper divisors (2849963516).

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

2728628650 is a wasteful number, since it uses less digits than its factorization.

2728628650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451047 (or 451031 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 46.

The square root of 2728628650 is about 52236.2771452943. The cubic root of 2728628650 is about 1397.3809282160.

The spelling of 2728628650 in words is "two billion, seven hundred twenty-eight million, six hundred twenty-eight thousand, six hundred fifty".