28398214724 has 24 divisors (see below), whose sum is σ = 56571939648. Its totient is φ = 12347049440.

The previous prime is 28398214711. The next prime is 28398214753. The reversal of 28398214724 is 42741289382.

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 7 ways as a sum of consecutive naturals, for example, 14029727 + ... + 14031750.

It is an arithmetic number, because the mean of its divisors is an integer number (2357164152).

Almost surely, 2^28398214724 is an apocalyptic number.

It is an amenable number.

28398214724 is a deficient number, since it is larger than the sum of its proper divisors (28173724924).

28398214724 is a wasteful number, since it uses less digits than its factorization.

28398214724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28061515 (or 28061513 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 50.

The spelling of 28398214724 in words is "twenty-eight billion, three hundred ninety-eight million, two hundred fourteen thousand, seven hundred twenty-four".