28205383679 has 16 divisors (see below), whose sum is σ = 32119197216. Its totient is φ = 24539241600.

The previous prime is 28205383651. The next prime is 28205383721. The reversal of 28205383679 is 97638350282.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28205383679 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28205383679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28205383079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 543212 + ... + 592865.

It is an arithmetic number, because the mean of its divisors is an integer number (2007449826).

Almost surely, 2^28205383679 is an apocalyptic number.

28205383679 is a deficient number, since it is larger than the sum of its proper divisors (3913813537).

28205383679 is a wasteful number, since it uses less digits than its factorization.

28205383679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136186.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 28205383679 in words is "twenty-eight billion, two hundred five million, three hundred eighty-three thousand, six hundred seventy-nine".