28274636144 has 20 divisors (see below), whose sum is σ = 54960560424. Its totient is φ = 14091265728.

The previous prime is 28274636123. The next prime is 28274636171. The reversal of 28274636144 is 44163647282.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 2873207 + ... + 2883030.

Almost surely, 2^28274636144 is an apocalyptic number.

It is an amenable number.

28274636144 is a deficient number, since it is larger than the sum of its proper divisors (26685924280).

28274636144 is a wasteful number, since it uses less digits than its factorization.

28274636144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5756552 (or 5756546 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 47.

The spelling of 28274636144 in words is "twenty-eight billion, two hundred seventy-four million, six hundred thirty-six thousand, one hundred forty-four".