28234971597 has 16 divisors (see below), whose sum is σ = 43363500032. Its totient is φ = 16007226480.

The previous prime is 28234971593. The next prime is 28234971659. The reversal of 28234971597 is 79517943282.

It is a happy number.

It is not a de Polignac number, because 28234971597 - 2² = 28234971593 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28234971593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5290729 + ... + 5296062.

It is an arithmetic number, because the mean of its divisors is an integer number (2710218752).

Almost surely, 2^28234971597 is an apocalyptic number.

It is an amenable number.

28234971597 is a deficient number, since it is larger than the sum of its proper divisors (15128528435).

28234971597 is a wasteful number, since it uses less digits than its factorization.

28234971597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10586928.

The product of its digits is 7620480, while the sum is 57.

The spelling of 28234971597 in words is "twenty-eight billion, two hundred thirty-four million, nine hundred seventy-one thousand, five hundred ninety-seven".