22068945 has 12 divisors (see below), whose sum is σ = 38252916. Its totient is φ = 11770080.

The previous prime is 22068923. The next prime is 22068961. The reversal of 22068945 is 54986022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15303744 + 6765201 = 3912^2 + 2601^2 .

It is not a de Polignac number, because 22068945 - 2⁶ = 22068881 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 245166 + ... + 245255.

It is an arithmetic number, because the mean of its divisors is an integer number (3187743).

Almost surely, 2^22068945 is an apocalyptic number.

It is an amenable number.

22068945 is a deficient number, since it is larger than the sum of its proper divisors (16183971).

22068945 is a wasteful number, since it uses less digits than its factorization.

22068945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490432 (or 490429 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 22068945 is about 4697.7595723919. The cubic root of 22068945 is about 280.4963348011.

The spelling of 22068945 in words is "twenty-two million, sixty-eight thousand, nine hundred forty-five".