22442215 has 8 divisors (see below), whose sum is σ = 26960688. Its totient is φ = 17933760.

The previous prime is 22442209. The next prime is 22442219. The reversal of 22442215 is 51224422.

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

It is not a de Polignac number, because 22442215 - 2³ = 22442207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22442219) 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, 3939 + ... + 7771.

It is an arithmetic number, because the mean of its divisors is an integer number (3370086).

Almost surely, 2^22442215 is an apocalyptic number.

22442215 is a deficient number, since it is larger than the sum of its proper divisors (4518473).

22442215 is a wasteful number, since it uses less digits than its factorization.

22442215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5009.

The product of its digits is 1280, while the sum is 22.

The square root of 22442215 is about 4737.3215005950. The cubic root of 22442215 is about 282.0689225094.

Adding to 22442215 its reverse (51224422), we get a palindrome (73666637).

The spelling of 22442215 in words is "twenty-two million, four hundred forty-two thousand, two hundred fifteen".