20117422 has 24 divisors (see below), whose sum is σ = 33322104. Its totient is φ = 9101664.

The previous prime is 20117411. The next prime is 20117431. The reversal of 20117422 is 22471102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20117422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17353 + ... + 18475.

It is an arithmetic number, because the mean of its divisors is an integer number (1388421).

Almost surely, 2^20117422 is an apocalyptic number.

20117422 is a deficient number, since it is larger than the sum of its proper divisors (13204682).

20117422 is a wasteful number, since it uses less digits than its factorization.

20117422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204 (or 1191 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 20117422 is about 4485.2449208488. The cubic root of 20117422 is about 271.9719459965.

Adding to 20117422 its reverse (22471102), we get a palindrome (42588524).

The spelling of 20117422 in words is "twenty million, one hundred seventeen thousand, four hundred twenty-two".