20445622 has 8 divisors (see below), whose sum is σ = 30751776. Its totient is φ = 10195032.

The previous prime is 20445619. The next prime is 20445629. The reversal of 20445622 is 22654402.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20445629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12958 + ... + 14449.

It is an arithmetic number, because the mean of its divisors is an integer number (3843972).

Almost surely, 2^20445622 is an apocalyptic number.

20445622 is a deficient number, since it is larger than the sum of its proper divisors (10306154).

20445622 is a wasteful number, since it uses less digits than its factorization.

20445622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27782.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 20445622 is about 4521.6835360295. The cubic root of 20445622 is about 273.4429783523.

The spelling of 20445622 in words is "twenty million, four hundred forty-five thousand, six hundred twenty-two".