22006146 has 16 divisors (see below), whose sum is σ = 44068608. Its totient is φ = 7326000.

The previous prime is 22006133. The next prime is 22006163. The reversal of 22006146 is 64160022.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4096 + ... + 7796.

It is an arithmetic number, because the mean of its divisors is an integer number (2754288).

Almost surely, 2^22006146 is an apocalyptic number.

22006146 is an abundant number, since it is smaller than the sum of its proper divisors (22062462).

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

22006146 is a wasteful number, since it uses less digits than its factorization.

22006146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4697.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 22006146 is about 4691.0708798738. The cubic root of 22006146 is about 280.2300235660.

Adding to 22006146 its reverse (64160022), we get a palindrome (86166168).

The spelling of 22006146 in words is "twenty-two million, six thousand, one hundred forty-six".