28226271244 has 12 divisors (see below), whose sum is σ = 49459881744. Its totient is φ = 14094876464.

The previous prime is 28226271233. The next prime is 28226271247. The reversal of 28226271244 is 44217262282.

It is a super-2 number, since 2×28226271244² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28226271197 and 28226271206.

It is not an unprimeable number, because it can be changed into a prime (28226271247) 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, 4561312 + ... + 4567495.

It is an arithmetic number, because the mean of its divisors is an integer number (4121656812).

Almost surely, 2^28226271244 is an apocalyptic number.

It is an amenable number.

28226271244 is a deficient number, since it is larger than the sum of its proper divisors (21233610500).

28226271244 is a wasteful number, since it uses less digits than its factorization.

28226271244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9129584 (or 9129582 counting only the distinct ones).

The product of its digits is 172032, while the sum is 40.

The spelling of 28226271244 in words is "twenty-eight billion, two hundred twenty-six million, two hundred seventy-one thousand, two hundred forty-four".