22490516 has 12 divisors (see below), whose sum is σ = 39484788. Its totient is φ = 11209152.

The previous prime is 22490467. The next prime is 22490521. The reversal of 22490516 is 61509422.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9859600 + 12630916 = 3140^2 + 3554^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7601 + ... + 10136.

It is an arithmetic number, because the mean of its divisors is an integer number (3290399).

Almost surely, 2^22490516 is an apocalyptic number.

It is an amenable number.

22490516 is a deficient number, since it is larger than the sum of its proper divisors (16994272).

22490516 is a wasteful number, since it uses less digits than its factorization.

22490516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18058 (or 18056 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 22490516 is about 4742.4166835064. The cubic root of 22490516 is about 282.2711373756.

Adding to 22490516 its reverse (61509422), we get a palindrome (83999938).

The spelling of 22490516 in words is "twenty-two million, four hundred ninety thousand, five hundred sixteen".