20422412 has 12 divisors (see below), whose sum is σ = 35867496. Its totient is φ = 10174560.

The previous prime is 20422357. The next prime is 20422421. The reversal of 20422412 is 21422402.

It is a happy 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, 7889 + ... + 10152.

It is an arithmetic number, because the mean of its divisors is an integer number (2988958).

Almost surely, 2^20422412 is an apocalyptic number.

It is an amenable number.

20422412 is a deficient number, since it is larger than the sum of its proper divisors (15445084).

20422412 is a wasteful number, since it uses less digits than its factorization.

20422412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18328 (or 18326 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 20422412 is about 4519.1162852930. The cubic root of 20422412 is about 273.3394677716.

Adding to 20422412 its reverse (21422402), we get a palindrome (41844814).

The spelling of 20422412 in words is "twenty million, four hundred twenty-two thousand, four hundred twelve".