28075250497 has 12 divisors (see below), whose sum is σ = 33863621376. Its totient is φ = 22797945720.

The previous prime is 28075250419. The next prime is 28075250513. The reversal of 28075250497 is 79405257082.

It is not a de Polignac number, because 28075250497 - 2¹¹ = 28075248449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28075250497.

It is not an unprimeable number, because it can be changed into a prime (28075259497) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5552529 + ... + 5557582.

It is an arithmetic number, because the mean of its divisors is an integer number (2821968448).

Almost surely, 2^28075250497 is an apocalyptic number.

It is an amenable number.

28075250497 is a deficient number, since it is larger than the sum of its proper divisors (5788370879).

28075250497 is a wasteful number, since it uses less digits than its factorization.

28075250497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11110156 (or 11110137 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 49.

The spelling of 28075250497 in words is "twenty-eight billion, seventy-five million, two hundred fifty thousand, four hundred ninety-seven".