28841227199 has 4 divisors (see below), whose sum is σ = 29620719864. Its totient is φ = 28061734536.

The previous prime is 28841227193. The next prime is 28841227201. The reversal of 28841227199 is 99172214882.

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 28841227199 - 2²⁸ = 28572791743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28841227199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28841227193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389746277 + ... + 389746350.

It is an arithmetic number, because the mean of its divisors is an integer number (7405179966).

Almost surely, 2^28841227199 is an apocalyptic number.

28841227199 is a deficient number, since it is larger than the sum of its proper divisors (779492665).

28841227199 is an equidigital number, since it uses as much as digits as its factorization.

28841227199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779492664.

The product of its digits is 1161216, while the sum is 53.

The spelling of 28841227199 in words is "twenty-eight billion, eight hundred forty-one million, two hundred twenty-seven thousand, one hundred ninety-nine".