28338882847 has 4 divisors (see below), whose sum is σ = 30915144936. Its totient is φ = 25762620760.

The previous prime is 28338882839. The next prime is 28338882857. The reversal of 28338882847 is 74828883382.

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 28338882847 - 2³ = 28338882839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28338882827) 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, 1288131028 + ... + 1288131049.

It is an arithmetic number, because the mean of its divisors is an integer number (7728786234).

Almost surely, 2^28338882847 is an apocalyptic number.

28338882847 is a deficient number, since it is larger than the sum of its proper divisors (2576262089).

28338882847 is a wasteful number, since it uses less digits than its factorization.

28338882847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2576262088.

The product of its digits is 33030144, while the sum is 61.

The spelling of 28338882847 in words is "twenty-eight billion, three hundred thirty-eight million, eight hundred eighty-two thousand, eight hundred forty-seven".