28702194736 has 20 divisors (see below), whose sum is σ = 55646590672. Its totient is φ = 14341784256.

The previous prime is 28702194617. The next prime is 28702194757. The reversal of 28702194736 is 63749120782.

It is a happy number.

It is a super-2 number, since 2×28702194736² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28702194736.

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 3 ways as a sum of consecutive naturals, for example, 556611 + ... + 605986.

Almost surely, 2^28702194736 is an apocalyptic number.

It is an amenable number.

28702194736 is a deficient number, since it is larger than the sum of its proper divisors (26944395936).

28702194736 is a wasteful number, since it uses less digits than its factorization.

28702194736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164148 (or 1164142 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 28702194736 in words is "twenty-eight billion, seven hundred two million, one hundred ninety-four thousand, seven hundred thirty-six".