22490307 has 12 divisors (see below), whose sum is σ = 37126960. Its totient is φ = 12851568.

The previous prime is 22490287. The next prime is 22490329. The reversal of 22490307 is 70309422.

22490307 is nontrivially palindromic in base 5.

It is not a de Polignac number, because 22490307 - 2¹¹ = 22488259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22490107) 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 11 ways as a sum of consecutive naturals, for example, 178432 + ... + 178557.

Almost surely, 2^22490307 is an apocalyptic number.

22490307 is a deficient number, since it is larger than the sum of its proper divisors (14636653).

22490307 is a wasteful number, since it uses less digits than its factorization.

22490307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357002 (or 356999 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 22490307 is about 4742.3946482763. The cubic root of 22490307 is about 282.2702630093.

Adding to 22490307 its reverse (70309422), we get a palindrome (92799729).

The spelling of 22490307 in words is "twenty-two million, four hundred ninety thousand, three hundred seven".