28285283271 has 24 divisors (see below), whose sum is σ = 43877735424. Its totient is φ = 16160556720.

The previous prime is 28285283249. The next prime is 28285283317. The reversal of 28285283271 is 17238258282.

It is not a de Polignac number, because 28285283271 - 2⁶ = 28285283207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28285283271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28285283171) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1448986 + ... + 1468376.

It is an arithmetic number, because the mean of its divisors is an integer number (1828238976).

Almost surely, 2^28285283271 is an apocalyptic number.

28285283271 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28285283271 is a deficient number, since it is larger than the sum of its proper divisors (15592452153).

28285283271 is a wasteful number, since it uses less digits than its factorization.

28285283271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29331 (or 29324 counting only the distinct ones).

The product of its digits is 860160, while the sum is 48.

The spelling of 28285283271 in words is "twenty-eight billion, two hundred eighty-five million, two hundred eighty-three thousand, two hundred seventy-one".