28282911 has 16 divisors (see below), whose sum is σ = 39318144. Its totient is φ = 18067104.

The previous prime is 28282909. The next prime is 28282913. The reversal of 28282911 is 11928282.

It is an interprime number because it is at equal distance from previous prime (28282909) and next prime (28282913).

It is not a de Polignac number, because 28282911 - 2¹ = 28282909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28282913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5536 + ... + 9338.

It is an arithmetic number, because the mean of its divisors is an integer number (2457384).

Almost surely, 2^28282911 is an apocalyptic number.

28282911 is a deficient number, since it is larger than the sum of its proper divisors (11035233).

28282911 is a wasteful number, since it uses less digits than its factorization.

28282911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3910.

The product of its digits is 4608, while the sum is 33.

The square root of 28282911 is about 5318.1680116371. The cubic root of 28282911 is about 304.6781914369.

The spelling of 28282911 in words is "twenty-eight million, two hundred eighty-two thousand, nine hundred eleven".