28513517814 has 48 divisors (see below), whose sum is σ = 63465961104. Its totient is φ = 9246336000.

The previous prime is 28513517743. The next prime is 28513517821. The reversal of 28513517814 is 41871531582.

28513517814 is a `hidden beast` number, since 2 + 8 + 51 + 3 + 517 + 81 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 28513517814.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 205789 + ... + 315239.

It is an arithmetic number, because the mean of its divisors is an integer number (1322207523).

Almost surely, 2^28513517814 is an apocalyptic number.

28513517814 is an abundant number, since it is smaller than the sum of its proper divisors (34952443290).

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

28513517814 is a wasteful number, since it uses less digits than its factorization.

28513517814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109853 (or 109850 counting only the distinct ones).

The product of its digits is 268800, while the sum is 45.

The spelling of 28513517814 in words is "twenty-eight billion, five hundred thirteen million, five hundred seventeen thousand, eight hundred fourteen".