2728661098 has 28 divisors (see below), whose sum is σ = 4469358690. Its totient is φ = 1247953896.

The previous prime is 2728661077. The next prime is 2728661113. The reversal of 2728661098 is 8901668272.

It can be written as a sum of positive squares in only one way, i.e., 2305248169 + 423412929 = 48013^2 + 20577^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 94091748 + ... + 94091776.

Almost surely, 2^2728661098 is an apocalyptic number.

2728661098 is a deficient number, since it is larger than the sum of its proper divisors (1740697592).

2728661098 is an frugal number, since it uses more digits than its factorization.

2728661098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 2728661098 is about 52236.5877331205. The cubic root of 2728661098 is about 1397.3864672666.

The spelling of 2728661098 in words is "two billion, seven hundred twenty-eight million, six hundred sixty-one thousand, ninety-eight".