28682263639 has 4 divisors (see below), whose sum is σ = 28699471224. Its totient is φ = 28665056056.

The previous prime is 28682263627. The next prime is 28682263651. The reversal of 28682263639 is 93636228682.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (28682263627) and next prime (28682263651).

It is a cyclic number.

It is not a de Polignac number, because 28682263639 - 2²³ = 28673875031 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 28682263639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28682263619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8601292 + ... + 8604625.

It is an arithmetic number, because the mean of its divisors is an integer number (7174867806).

Almost surely, 2^28682263639 is an apocalyptic number.

28682263639 is a deficient number, since it is larger than the sum of its proper divisors (17207585).

28682263639 is a wasteful number, since it uses less digits than its factorization.

28682263639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17207584.

The product of its digits is 8957952, while the sum is 55.

The spelling of 28682263639 in words is "twenty-eight billion, six hundred eighty-two million, two hundred sixty-three thousand, six hundred thirty-nine".