28221268259 has 8 divisors (see below), whose sum is σ = 28392333840. Its totient is φ = 28050630016.

The previous prime is 28221268247. The next prime is 28221268261. The reversal of 28221268259 is 95286212282.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28221268259 - 2²⁰ = 28220219683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28221268289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26144 + ... + 239010.

It is an arithmetic number, because the mean of its divisors is an integer number (3549041730).

Almost surely, 2^28221268259 is an apocalyptic number.

28221268259 is a deficient number, since it is larger than the sum of its proper divisors (171065581).

28221268259 is a wasteful number, since it uses less digits than its factorization.

28221268259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213669.

The product of its digits is 552960, while the sum is 47.

The spelling of 28221268259 in words is "twenty-eight billion, two hundred twenty-one million, two hundred sixty-eight thousand, two hundred fifty-nine".