28827510687 has 16 divisors (see below), whose sum is σ = 42711792480. Its totient is φ = 19216374336.

The previous prime is 28827510683. The next prime is 28827510689. The reversal of 28827510687 is 78601572882.

28827510687 is a `hidden beast` number, since 28 + 8 + 27 + 510 + 6 + 87 = 666.

It is not a de Polignac number, because 28827510687 - 2² = 28827510683 is a prime.

It is a hoax number, since the sum of its digits (54) 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 (28827510683) 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, 243843 + ... + 342219.

It is an arithmetic number, because the mean of its divisors is an integer number (2669487030).

Almost surely, 2^28827510687 is an apocalyptic number.

28827510687 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

28827510687 is a deficient number, since it is larger than the sum of its proper divisors (13884281793).

28827510687 is a wasteful number, since it uses less digits than its factorization.

28827510687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109239 (or 109233 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 54.

The spelling of 28827510687 in words is "twenty-eight billion, eight hundred twenty-seven million, five hundred ten thousand, six hundred eighty-seven".