22219264 has 20 divisors (see below), whose sum is σ = 44396154. Its totient is φ = 11109376.

The previous prime is 22219247. The next prime is 22219271. The reversal of 22219264 is 46291222.

It can be written as a sum of positive squares in only one way, i.e., 14379264 + 7840000 = 3792^2 + 2800^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21187 + ... + 22210.

Almost surely, 2^22219264 is an apocalyptic number.

It is an amenable number.

22219264 is a deficient number, since it is larger than the sum of its proper divisors (22176890).

22219264 is an frugal number, since it uses more digits than its factorization.

22219264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43415 (or 43399 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 22219264 is about 4713.7314306184. The cubic root of 22219264 is about 281.1317459074.

The spelling of 22219264 in words is "twenty-two million, two hundred nineteen thousand, two hundred sixty-four".