28351330708 has 12 divisors (see below), whose sum is σ = 49619189620. Its totient is φ = 14174419392.

The previous prime is 28351330691. The next prime is 28351330717. The reversal of 28351330708 is 80703315382.

It can be written as a sum of positive squares in 2 ways, for example, as 16236366084 + 12114964624 = 127422^2 + 110068^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259323 + ... + 352066.

Almost surely, 2^28351330708 is an apocalyptic number.

It is an amenable number.

28351330708 is a deficient number, since it is larger than the sum of its proper divisors (21267858912).

28351330708 is a wasteful number, since it uses less digits than its factorization.

28351330708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622986 (or 622984 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 28351330708 in words is "twenty-eight billion, three hundred fifty-one million, three hundred thirty thousand, seven hundred eight".