22071844 has 12 divisors (see below), whose sum is σ = 40658800. Its totient is φ = 10455048.

The previous prime is 22071839. The next prime is 22071851. The reversal of 22071844 is 44817022.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145134 + ... + 145285.

Almost surely, 2^22071844 is an apocalyptic number.

It is an amenable number.

22071844 is a deficient number, since it is larger than the sum of its proper divisors (18586956).

22071844 is a wasteful number, since it uses less digits than its factorization.

22071844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290442 (or 290440 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 22071844 is about 4698.0681135973. The cubic root of 22071844 is about 280.5086163619.

Adding to 22071844 its reverse (44817022), we get a palindrome (66888866).

The spelling of 22071844 in words is "twenty-two million, seventy-one thousand, eight hundred forty-four".