28611288285 has 32 divisors (see below), whose sum is σ = 46152492672. Its totient is φ = 15134895360.

The previous prime is 28611288283. The next prime is 28611288287. The reversal of 28611288285 is 58288211682.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28611288283) and next prime (28611288287).

It is not a de Polignac number, because 28611288285 - 2¹ = 28611288283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28611288283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1334067 + ... + 1355343.

It is an arithmetic number, because the mean of its divisors is an integer number (1442265396).

Almost surely, 2^28611288285 is an apocalyptic number.

It is an amenable number.

28611288285 is a deficient number, since it is larger than the sum of its proper divisors (17541204387).

28611288285 is a wasteful number, since it uses less digits than its factorization.

28611288285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22013.

The product of its digits is 983040, while the sum is 51.

The spelling of 28611288285 in words is "twenty-eight billion, six hundred eleven million, two hundred eighty-eight thousand, two hundred eighty-five".