2728663450 has 24 divisors (see below), whose sum is σ = 5079961692. Its totient is φ = 1090465920.

The previous prime is 2728663439. The next prime is 2728663459. The reversal of 2728663450 is 543668272.

It can be written as a sum of positive squares in 6 ways, for example, as 1217242321 + 1511421129 = 34889^2 + 38877^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2728663397 and 2728663406.

It is not an unprimeable number, because it can be changed into a prime (2728663459) 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 11 ways as a sum of consecutive naturals, for example, 31422 + ... + 80278.

Almost surely, 2^2728663450 is an apocalyptic number.

2728663450 is a deficient number, since it is larger than the sum of its proper divisors (2351298242).

2728663450 is a wasteful number, since it uses less digits than its factorization.

2728663450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49986 (or 49981 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 43.

The square root of 2728663450 is about 52236.6102460717. The cubic root of 2728663450 is about 1397.3868687642.

The spelling of 2728663450 in words is "two billion, seven hundred twenty-eight million, six hundred sixty-three thousand, four hundred fifty".