20565422 has 8 divisors (see below), whose sum is σ = 30880200. Its totient is φ = 10272024.

The previous prime is 20565407. The next prime is 20565439. The reversal of 20565422 is 22456502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20565391 and 20565400.

It is a congruent number.

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, 2672 + ... + 6947.

It is an arithmetic number, because the mean of its divisors is an integer number (3860025).

Almost surely, 2^20565422 is an apocalyptic number.

20565422 is a deficient number, since it is larger than the sum of its proper divisors (10314778).

20565422 is a wasteful number, since it uses less digits than its factorization.

20565422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10690.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 20565422 is about 4534.9114655085. The cubic root of 20565422 is about 273.9760133157.

The spelling of 20565422 in words is "twenty million, five hundred sixty-five thousand, four hundred twenty-two".