22223272 has 8 divisors (see below), whose sum is σ = 41668650. Its totient is φ = 11111632.

The previous prime is 22223263. The next prime is 22223281. The reversal of 22223272 is 27232222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22223263) and next prime (22223281).

It can be written as a sum of positive squares in only one way, i.e., 21846276 + 376996 = 4674^2 + 614^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1388947 + ... + 1388962.

Almost surely, 2^22223272 is an apocalyptic number.

It is an amenable number.

22223272 is a deficient number, since it is larger than the sum of its proper divisors (19445378).

22223272 is a wasteful number, since it uses less digits than its factorization.

22223272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777915 (or 2777911 counting only the distinct ones).

The product of its digits is 1344, while the sum is 22.

The square root of 22223272 is about 4714.1565523432. The cubic root of 22223272 is about 281.1486487819.

Adding to 22223272 its reverse (27232222), we get a palindrome (49455494).

The spelling of 22223272 in words is "twenty-two million, two hundred twenty-three thousand, two hundred seventy-two".