22140304 has 10 divisors (see below), whose sum is σ = 42896870. Its totient is φ = 11070144.

The previous prime is 22140299. The next prime is 22140323. The reversal of 22140304 is 40304122.

It can be written as a sum of positive squares in only one way, i.e., 15586704 + 6553600 = 3948^2 + 2560^2 .

It is a super-2 number, since 2×22140304² = 980386122424832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 1383769 = 22140304 / (2 + 2 + 1 + 4 + 0 + 3 + 0 + 4).

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, 691869 + ... + 691900.

It is an arithmetic number, because the mean of its divisors is an integer number (4289687).

Almost surely, 2^22140304 is an apocalyptic number.

It is an amenable number.

22140304 is a deficient number, since it is larger than the sum of its proper divisors (20756566).

22140304 is a wasteful number, since it uses less digits than its factorization.

22140304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383777 (or 1383771 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 22140304 is about 4705.3484461833. The cubic root of 22140304 is about 280.7983338781.

Adding to 22140304 its reverse (40304122), we get a palindrome (62444426).

The spelling of 22140304 in words is "twenty-two million, one hundred forty thousand, three hundred four".