20606422 has 4 divisors (see below), whose sum is σ = 30909636. Its totient is φ = 10303210.

The previous prime is 20606419. The next prime is 20606423. The reversal of 20606422 is 22460602.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 20606393 and 20606402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20606423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5151604 + ... + 5151607.

It is an arithmetic number, because the mean of its divisors is an integer number (7727409).

Almost surely, 2^20606422 is an apocalyptic number.

20606422 is a deficient number, since it is larger than the sum of its proper divisors (10303214).

20606422 is a wasteful number, since it uses less digits than its factorization.

20606422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10303213.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 20606422 is about 4539.4296998632. The cubic root of 20606422 is about 274.1579620895.

The spelling of 20606422 in words is "twenty million, six hundred six thousand, four hundred twenty-two".