28775607288 has 16 divisors (see below), whose sum is σ = 71939018280. Its totient is φ = 9591869088.

The previous prime is 28775607283. The next prime is 28775607299. The reversal of 28775607288 is 88270657782.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28775607283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 599491795 + ... + 599491842.

Almost surely, 2^28775607288 is an apocalyptic number.

It is an amenable number.

28775607288 is an abundant number, since it is smaller than the sum of its proper divisors (43163410992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28775607288 is a wasteful number, since it uses less digits than its factorization.

28775607288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198983646 (or 1198983642 counting only the distinct ones).

The product of its (nonzero) digits is 21073920, while the sum is 60.

It can be divided in two parts, 2877 and 5607288, that added together give a palindrome (5610165).

The spelling of 28775607288 in words is "twenty-eight billion, seven hundred seventy-five million, six hundred seven thousand, two hundred eighty-eight".