22066446 has 32 divisors (see below), whose sum is σ = 45513216. Its totient is φ = 7128000.

The previous prime is 22066441. The next prime is 22066469. The reversal of 22066446 is 64466022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22066441) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 66501 + ... + 66831.

It is an arithmetic number, because the mean of its divisors is an integer number (1422288).

Almost surely, 2^22066446 is an apocalyptic number.

22066446 is an abundant number, since it is smaller than the sum of its proper divisors (23446770).

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

22066446 is a wasteful number, since it uses less digits than its factorization.

22066446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 22066446 is about 4697.4935870100. The cubic root of 22066446 is about 280.4857469698.

It can be divided in two parts, 220 and 66446, that added together give a palindrome (66666).

The spelling of 22066446 in words is "twenty-two million, sixty-six thousand, four hundred forty-six".