28389397416 has 16 divisors (see below), whose sum is σ = 70973493600. Its totient is φ = 9463132464.

The previous prime is 28389397369. The next prime is 28389397441. The reversal of 28389397416 is 61479398382.

It is a self number, because there is not a number n which added to its sum of digits gives 28389397416.

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, 591445756 + ... + 591445803.

It is an arithmetic number, because the mean of its divisors is an integer number (4435843350).

Almost surely, 2^28389397416 is an apocalyptic number.

It is an amenable number.

28389397416 is an abundant number, since it is smaller than the sum of its proper divisors (42584096184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28389397416 is a wasteful number, since it uses less digits than its factorization.

28389397416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182891568 (or 1182891564 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 60.

The spelling of 28389397416 in words is "twenty-eight billion, three hundred eighty-nine million, three hundred ninety-seven thousand, four hundred sixteen".