28486830291 has 4 divisors (see below), whose sum is σ = 37982440392. Its totient is φ = 18991220192.

The previous prime is 28486830289. The next prime is 28486830293. The reversal of 28486830291 is 19203868482.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (28486830289) and next prime (28486830293).

It is a cyclic number.

It is not a de Polignac number, because 28486830291 - 2¹ = 28486830289 is a prime.

It is a super-2 number, since 2×28486830291² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28486830293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4747805046 + ... + 4747805051.

It is an arithmetic number, because the mean of its divisors is an integer number (9495610098).

Almost surely, 2^28486830291 is an apocalyptic number.

28486830291 is a deficient number, since it is larger than the sum of its proper divisors (9495610101).

28486830291 is an equidigital number, since it uses as much as digits as its factorization.

28486830291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9495610100.

The product of its (nonzero) digits is 1327104, while the sum is 51.

The spelling of 28486830291 in words is "twenty-eight billion, four hundred eighty-six million, eight hundred thirty thousand, two hundred ninety-one".