28647678374 has 32 divisors (see below), whose sum is σ = 51710131200. Its totient is φ = 11627997120.

The previous prime is 28647678289. The next prime is 28647678421. The reversal of 28647678374 is 47387674682.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 1028714 + ... + 1056194.

It is an arithmetic number, because the mean of its divisors is an integer number (1615941600).

Almost surely, 2^28647678374 is an apocalyptic number.

28647678374 is a deficient number, since it is larger than the sum of its proper divisors (23062452826).

28647678374 is a wasteful number, since it uses less digits than its factorization.

28647678374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31428.

The product of its digits is 75866112, while the sum is 62.

The spelling of 28647678374 in words is "twenty-eight billion, six hundred forty-seven million, six hundred seventy-eight thousand, three hundred seventy-four".