20118422 has 8 divisors (see below), whose sum is σ = 31489776. Its totient is φ = 9621832.

The previous prime is 20118421. The next prime is 20118433. The reversal of 20118422 is 22481102.

It is a happy number.

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 = 20118394 and 20118403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20118421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218633 + ... + 218724.

It is an arithmetic number, because the mean of its divisors is an integer number (3936222).

Almost surely, 2^20118422 is an apocalyptic number.

20118422 is a deficient number, since it is larger than the sum of its proper divisors (11371354).

20118422 is a wasteful number, since it uses less digits than its factorization.

20118422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437382.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 20118422 is about 4485.3563960961. The cubic root of 20118422 is about 271.9764523300.

Adding to 20118422 its reverse (22481102), we get a palindrome (42599524).

The spelling of 20118422 in words is "twenty million, one hundred eighteen thousand, four hundred twenty-two".