28786451239 has 24 divisors (see below), whose sum is σ = 37499130240. Its totient is φ = 21577334688.

The previous prime is 28786451219. The next prime is 28786451321. The reversal of 28786451239 is 93215468782.

It is not a de Polignac number, because 28786451239 - 2⁵ = 28786451207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28786451239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28786451219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 617877 + ... + 662830.

It is an arithmetic number, because the mean of its divisors is an integer number (1562463760).

Almost surely, 2^28786451239 is an apocalyptic number.

28786451239 is a deficient number, since it is larger than the sum of its proper divisors (8712679001).

28786451239 is a wasteful number, since it uses less digits than its factorization.

28786451239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280759 (or 1280746 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 55.

The spelling of 28786451239 in words is "twenty-eight billion, seven hundred eighty-six million, four hundred fifty-one thousand, two hundred thirty-nine".