20605422 has 8 divisors (see below), whose sum is σ = 41210856. Its totient is φ = 6868472.

The previous prime is 20605397. The next prime is 20605463. The reversal of 20605422 is 22450602.

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

20605422 is an admirable number.

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, 1717113 + ... + 1717124.

It is an arithmetic number, because the mean of its divisors is an integer number (5151357).

Almost surely, 2^20605422 is an apocalyptic number.

20605422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20605422 is a wasteful number, since it uses less digits than its factorization.

20605422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3434242.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 20605422 is about 4539.3195525321. The cubic root of 20605422 is about 274.1535271873.

The spelling of 20605422 in words is "twenty million, six hundred five thousand, four hundred twenty-two".