22272142 has 32 divisors (see below), whose sum is σ = 38880000. Its totient is φ = 9491328.

The previous prime is 22272139. The next prime is 22272149. The reversal of 22272142 is 24127222.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22272149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14109 + ... + 15607.

It is an arithmetic number, because the mean of its divisors is an integer number (1215000).

Almost surely, 2^22272142 is an apocalyptic number.

22272142 is a deficient number, since it is larger than the sum of its proper divisors (16607858).

22272142 is a wasteful number, since it uses less digits than its factorization.

22272142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560.

The product of its digits is 896, while the sum is 22.

The square root of 22272142 is about 4719.3370297108. The cubic root of 22272142 is about 281.3545841832.

Adding to 22272142 its reverse (24127222), we get a palindrome (46399364).

The spelling of 22272142 in words is "twenty-two million, two hundred seventy-two thousand, one hundred forty-two".