28223066441 has 8 divisors (see below), whose sum is σ = 28297852200. Its totient is φ = 28148334592.

The previous prime is 28223066437. The next prime is 28223066453. The reversal of 28223066441 is 14466032282.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 73273600 + 28149792841 = 8560^2 + 167779^2 .

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 28223066441 - 2² = 28223066437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28223066395 and 28223066404.

It is not an unprimeable number, because it can be changed into a prime (28223066471) 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, 1170281 + ... + 1194153.

It is an arithmetic number, because the mean of its divisors is an integer number (3537231525).

Almost surely, 2^28223066441 is an apocalyptic number.

It is an amenable number.

28223066441 is a deficient number, since it is larger than the sum of its proper divisors (74785759).

28223066441 is a wasteful number, since it uses less digits than its factorization.

28223066441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26955.

The product of its (nonzero) digits is 110592, while the sum is 38.

The spelling of 28223066441 in words is "twenty-eight billion, two hundred twenty-three million, sixty-six thousand, four hundred forty-one".