28338547271 has 4 divisors (see below), whose sum is σ = 29104453992. Its totient is φ = 27572640552.

The previous prime is 28338547249. The next prime is 28338547301. The reversal of 28338547271 is 17274583382.

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 28338547271 - 2¹⁴ = 28338530887 is a prime.

It is a super-2 number, since 2×28338547271² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28338547231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382953305 + ... + 382953378.

It is an arithmetic number, because the mean of its divisors is an integer number (7276113498).

Almost surely, 2^28338547271 is an apocalyptic number.

28338547271 is a deficient number, since it is larger than the sum of its proper divisors (765906721).

28338547271 is an equidigital number, since it uses as much as digits as its factorization.

28338547271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765906720.

The product of its digits is 2257920, while the sum is 50.

The spelling of 28338547271 in words is "twenty-eight billion, three hundred thirty-eight million, five hundred forty-seven thousand, two hundred seventy-one".