28344337772 has 12 divisors (see below), whose sum is σ = 49603794240. Its totient is φ = 14171825136.

The previous prime is 28344337759. The next prime is 28344337781. The reversal of 28344337772 is 27773344382.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28344337772.

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, 222938 + ... + 326174.

It is an arithmetic number, because the mean of its divisors is an integer number (4133649520).

Almost surely, 2^28344337772 is an apocalyptic number.

It is an amenable number.

28344337772 is a deficient number, since it is larger than the sum of its proper divisors (21259456468).

28344337772 is a wasteful number, since it uses less digits than its factorization.

28344337772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171880 (or 171878 counting only the distinct ones).

The product of its digits is 4741632, while the sum is 50.

The spelling of 28344337772 in words is "twenty-eight billion, three hundred forty-four million, three hundred thirty-seven thousand, seven hundred seventy-two".