22005772 has 6 divisors (see below), whose sum is σ = 38510108. Its totient is φ = 11002884.

The previous prime is 22005749. The next prime is 22005791. The reversal of 22005772 is 27750022.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2750718 + ... + 2750725.

Almost surely, 2^22005772 is an apocalyptic number.

It is an amenable number.

22005772 is a deficient number, since it is larger than the sum of its proper divisors (16504336).

22005772 is a wasteful number, since it uses less digits than its factorization.

22005772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5501447 (or 5501445 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 22005772 is about 4691.0310167382. The cubic root of 22005772 is about 280.2284360304.

Adding to 22005772 its reverse (27750022), we get a palindrome (49755794).

The spelling of 22005772 in words is "twenty-two million, five thousand, seven hundred seventy-two".