28528566674 has 4 divisors (see below), whose sum is σ = 42792850014. Its totient is φ = 14264283336.

The previous prime is 28528566611. The next prime is 28528566739. The reversal of 28528566674 is 47666582582.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28512686449 + 15880225 = 168857^2 + 3985^2 .

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 as a sum of consecutive naturals, namely, 7132141667 + ... + 7132141670.

Almost surely, 2^28528566674 is an apocalyptic number.

28528566674 is a deficient number, since it is larger than the sum of its proper divisors (14264283340).

28528566674 is a wasteful number, since it uses less digits than its factorization.

28528566674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14264283339.

The product of its digits is 38707200, while the sum is 59.

The spelling of 28528566674 in words is "twenty-eight billion, five hundred twenty-eight million, five hundred sixty-six thousand, six hundred seventy-four".