28287163883 has 4 divisors (see below), whose sum is σ = 30858724248. Its totient is φ = 25715603520.

The previous prime is 28287163871. The next prime is 28287163909. The reversal of 28287163883 is 38836178282.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28287163883 - 2²⁸ = 28018728427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28287163783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1285780166 + ... + 1285780187.

It is an arithmetic number, because the mean of its divisors is an integer number (7714681062).

Almost surely, 2^28287163883 is an apocalyptic number.

28287163883 is a deficient number, since it is larger than the sum of its proper divisors (2571560365).

28287163883 is a wasteful number, since it uses less digits than its factorization.

28287163883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2571560364.

The product of its digits is 6193152, while the sum is 56.

The spelling of 28287163883 in words is "twenty-eight billion, two hundred eighty-seven million, one hundred sixty-three thousand, eight hundred eighty-three".