22006746 has 12 divisors (see below), whose sum is σ = 47681322. Its totient is φ = 7335576.

The previous prime is 22006741. The next prime is 22006771. The reversal of 22006746 is 64760022.

It can be written as a sum of positive squares in only one way, i.e., 20602521 + 1404225 = 4539^2 + 1185^2 .

It is not an unprimeable number, because it can be changed into a prime (22006741) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 611281 + ... + 611316.

Almost surely, 2^22006746 is an apocalyptic number.

22006746 is an abundant number, since it is smaller than the sum of its proper divisors (25674576).

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

22006746 is a wasteful number, since it uses less digits than its factorization.

22006746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222605 (or 1222602 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 22006746 is about 4691.1348307206. The cubic root of 22006746 is about 280.2325703770.

Adding to 22006746 its reverse (64760022), we get a palindrome (86766768).

The spelling of 22006746 in words is "twenty-two million, six thousand, seven hundred forty-six".