28090505677 has 8 divisors (see below), whose sum is σ = 30255639680. Its totient is φ = 25925989680.

The previous prime is 28090505647. The next prime is 28090505701. The reversal of 28090505677 is 77650509082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28090505677 - 2⁷ = 28090505549 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 28090505677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28090505647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57849 + ... + 243982.

It is an arithmetic number, because the mean of its divisors is an integer number (3781954960).

Almost surely, 2^28090505677 is an apocalyptic number.

It is an amenable number.

28090505677 is a deficient number, since it is larger than the sum of its proper divisors (2165134003).

28090505677 is a wasteful number, since it uses less digits than its factorization.

28090505677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309003.

The product of its (nonzero) digits is 1058400, while the sum is 49.

The spelling of 28090505677 in words is "twenty-eight billion, ninety million, five hundred five thousand, six hundred seventy-seven".