28271266285 has 16 divisors (see below), whose sum is σ = 34114046400. Its totient is φ = 22491417600.

The previous prime is 28271266273. The next prime is 28271266297. The reversal of 28271266285 is 58266217282.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28271266273) and next prime (28271266297).

It is not a de Polignac number, because 28271266285 - 2¹¹ = 28271264237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4485066 + ... + 4491364.

It is an arithmetic number, because the mean of its divisors is an integer number (2132127900).

Almost surely, 2^28271266285 is an apocalyptic number.

It is an amenable number.

28271266285 is a deficient number, since it is larger than the sum of its proper divisors (5842780115).

28271266285 is a wasteful number, since it uses less digits than its factorization.

28271266285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11148.

The product of its digits is 1290240, while the sum is 49.

The spelling of 28271266285 in words is "twenty-eight billion, two hundred seventy-one million, two hundred sixty-six thousand, two hundred eighty-five".