28223339 has 8 divisors (see below), whose sum is σ = 28790112. Its totient is φ = 27662400.

The previous prime is 28223311. The next prime is 28223347. The reversal of 28223339 is 93332282.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28223339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28223389) 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, 9047 + ... + 11759.

It is an arithmetic number, because the mean of its divisors is an integer number (3598764).

Almost surely, 2^28223339 is an apocalyptic number.

28223339 is a deficient number, since it is larger than the sum of its proper divisors (566773).

28223339 is a wasteful number, since it uses less digits than its factorization.

28223339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2917.

The product of its digits is 15552, while the sum is 32.

The square root of 28223339 is about 5312.5642584349. The cubic root of 28223339 is about 304.4641275756.

The spelling of 28223339 in words is "twenty-eight million, two hundred twenty-three thousand, three hundred thirty-nine".