22724422 has 8 divisors (see below), whose sum is σ = 38956176. Its totient is φ = 9739032.

The previous prime is 22724419. The next prime is 22724423. The reversal of 22724422 is 22442722.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22724423) 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, 811573 + ... + 811600.

It is an arithmetic number, because the mean of its divisors is an integer number (4869522).

Almost surely, 2^22724422 is an apocalyptic number.

22724422 is a deficient number, since it is larger than the sum of its proper divisors (16231754).

22724422 is a wasteful number, since it uses less digits than its factorization.

22724422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623182.

The product of its digits is 3584, while the sum is 25.

The square root of 22724422 is about 4767.0139500530. The cubic root of 22724422 is about 283.2463237633.

It can be divided in two parts, 227 and 24422, that added together give a square (24649 = 157²).

The spelling of 22724422 in words is "twenty-two million, seven hundred twenty-four thousand, four hundred twenty-two".