22228539 has 8 divisors (see below), whose sum is σ = 29698320. Its totient is φ = 14788896.

The previous prime is 22228513. The next prime is 22228541. The reversal of 22228539 is 93582222.

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

It is not a de Polignac number, because 22228539 - 2¹² = 22224443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22228139) 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, 5752 + ... + 8805.

It is an arithmetic number, because the mean of its divisors is an integer number (3712290).

Almost surely, 2^22228539 is an apocalyptic number.

22228539 is a deficient number, since it is larger than the sum of its proper divisors (7469781).

22228539 is a wasteful number, since it uses less digits than its factorization.

22228539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15069.

The product of its digits is 17280, while the sum is 33.

The square root of 22228539 is about 4714.7151557650. The cubic root of 22228539 is about 281.1708581272.

The spelling of 22228539 in words is "twenty-two million, two hundred twenty-eight thousand, five hundred thirty-nine".