22490646 has 8 divisors (see below), whose sum is σ = 44981304. Its totient is φ = 7496880.

The previous prime is 22490641. The next prime is 22490647. The reversal of 22490646 is 64609422.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

22490646 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22490641) 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 3 ways as a sum of consecutive naturals, for example, 1874215 + ... + 1874226.

It is an arithmetic number, because the mean of its divisors is an integer number (5622663).

Almost surely, 2^22490646 is an apocalyptic number.

22490646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22490646 is a wasteful number, since it uses less digits than its factorization.

22490646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3748446.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 22490646 is about 4742.4303895787. The cubic root of 22490646 is about 282.2716812371.

The spelling of 22490646 in words is "twenty-two million, four hundred ninety thousand, six hundred forty-six".