28828156271 has 4 divisors (see below), whose sum is σ = 28837708200. Its totient is φ = 28818604344.

The previous prime is 28828156243. The next prime is 28828156333. The reversal of 28828156271 is 17265182882.

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 28828156271 - 2¹⁴ = 28828139887 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 (28828156211) 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, 4771436 + ... + 4777473.

It is an arithmetic number, because the mean of its divisors is an integer number (7209427050).

Almost surely, 2^28828156271 is an apocalyptic number.

28828156271 is a deficient number, since it is larger than the sum of its proper divisors (9551929).

28828156271 is an equidigital number, since it uses as much as digits as its factorization.

28828156271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9551928.

The product of its digits is 860160, while the sum is 50.

The spelling of 28828156271 in words is "twenty-eight billion, eight hundred twenty-eight million, one hundred fifty-six thousand, two hundred seventy-one".