22287289 has 8 divisors (see below), whose sum is σ = 23708160. Its totient is φ = 20878656.

The previous prime is 22287281. The next prime is 22287301. The reversal of 22287289 is 98278222.

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 22287289 - 2³ = 22287281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22287281) 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, 852 + ... + 6730.

It is an arithmetic number, because the mean of its divisors is an integer number (2963520).

Almost surely, 2^22287289 is an apocalyptic number.

It is an amenable number.

22287289 is a deficient number, since it is larger than the sum of its proper divisors (1420871).

22287289 is a wasteful number, since it uses less digits than its factorization.

22287289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6119.

The product of its digits is 64512, while the sum is 40.

The square root of 22287289 is about 4720.9415374478. The cubic root of 22287289 is about 281.4183516189.

The spelling of 22287289 in words is "twenty-two million, two hundred eighty-seven thousand, two hundred eighty-nine".