28083477785402 has 16 divisors (see below), whose sum is σ = 45875344009320. Its totient is φ = 12815969117952.

The previous prime is 28083477785393. The next prime is 28083477785413. The reversal of 28083477785402 is 20458777438082.

It can be written as a sum of positive squares in 4 ways, for example, as 22579897852561 + 5503579932841 = 4751831^2 + 2345971^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6068164883 + ... + 6068169510.

Almost surely, 2^{28083477785402} is an apocalyptic number.

28083477785402 is a deficient number, since it is larger than the sum of its proper divisors (17791866223918).

28083477785402 is a wasteful number, since it uses less digits than its factorization.

28083477785402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12136334497.

The product of its (nonzero) digits is 168591360, while the sum is 65.

The spelling of 28083477785402 in words is "twenty-eight trillion, eighty-three billion, four hundred seventy-seven million, seven hundred eighty-five thousand, four hundred two".