22442222 has 8 divisors (see below), whose sum is σ = 36723672. Its totient is φ = 10201000.

The previous prime is 22442219. The next prime is 22442237. The reversal of 22442222 is 22224422.

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

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 22442194 and 22442203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510029 + ... + 510072.

It is an arithmetic number, because the mean of its divisors is an integer number (4590459).

Almost surely, 2^22442222 is an apocalyptic number.

22442222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22442222 is a deficient number, since it is larger than the sum of its proper divisors (14281450).

22442222 is a wasteful number, since it uses less digits than its factorization.

22442222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020114.

The product of its digits is 1024, while the sum is 20.

The square root of 22442222 is about 4737.3222394091. The cubic root of 22442222 is about 282.0689518363.

Adding to 22442222 its reverse (22224422), we get a palindrome (44666644).

It can be divided in two parts, 224422 and 22, that multiplied together give a square (4937284 = 2222²).

The spelling of 22442222 in words is "twenty-two million, four hundred forty-two thousand, two hundred twenty-two".