28285647365 has 16 divisors (see below), whose sum is σ = 35435477376. Its totient is φ = 21634324800.

The previous prime is 28285647337. The next prime is 28285647367. The reversal of 28285647365 is 56374658282.

It is not a de Polignac number, because 28285647365 - 2²⁶ = 28218538501 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 28285647365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28285647367) 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, 187355 + ... + 302775.

It is an arithmetic number, because the mean of its divisors is an integer number (2214717336).

Almost surely, 2^28285647365 is an apocalyptic number.

It is an amenable number.

28285647365 is a deficient number, since it is larger than the sum of its proper divisors (7149830011).

28285647365 is a wasteful number, since it uses less digits than its factorization.

28285647365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117580.

The product of its digits is 19353600, while the sum is 56.

The spelling of 28285647365 in words is "twenty-eight billion, two hundred eighty-five million, six hundred forty-seven thousand, three hundred sixty-five".