22872218 has 8 divisors (see below), whose sum is σ = 34462848. Its totient is φ = 11384604.

The previous prime is 22872211. The next prime is 22872247. The reversal of 22872218 is 81227822.

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

It is not an unprimeable number, because it can be changed into a prime (22872211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25196 + ... + 26087.

It is an arithmetic number, because the mean of its divisors is an integer number (4307856).

Almost surely, 2^22872218 is an apocalyptic number.

22872218 is a deficient number, since it is larger than the sum of its proper divisors (11590630).

22872218 is a wasteful number, since it uses less digits than its factorization.

22872218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51508.

The product of its digits is 7168, while the sum is 32.

The square root of 22872218 is about 4782.4907736450. The cubic root of 22872218 is about 283.8590602007.

The spelling of 22872218 in words is "twenty-two million, eight hundred seventy-two thousand, two hundred eighteen".