20208422 has 8 divisors (see below), whose sum is σ = 32644416. Its totient is φ = 9326952.

The previous prime is 20208413. The next prime is 20208431. The reversal of 20208422 is 22480202.

It is an interprime number because it is at equal distance from previous prime (20208413) and next prime (20208431).

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 = 20208394 and 20208403.

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, 388598 + ... + 388649.

It is an arithmetic number, because the mean of its divisors is an integer number (4080552).

Almost surely, 2^20208422 is an apocalyptic number.

20208422 is a deficient number, since it is larger than the sum of its proper divisors (12435994).

20208422 is a wasteful number, since it uses less digits than its factorization.

20208422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777262.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 20208422 is about 4495.3778484127. The cubic root of 20208422 is about 272.3814123621.

Adding to 20208422 its reverse (22480202), we get a palindrome (42688624).

The spelling of 20208422 in words is "twenty million, two hundred eight thousand, four hundred twenty-two".