20450222 has 8 divisors (see below), whose sum is σ = 33035016. Its totient is φ = 9438552.

The previous prime is 20450207. The next prime is 20450239. The reversal of 20450222 is 22205402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20450222.

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, 393248 + ... + 393299.

It is an arithmetic number, because the mean of its divisors is an integer number (4129377).

Almost surely, 2^20450222 is an apocalyptic number.

20450222 is a deficient number, since it is larger than the sum of its proper divisors (12584794).

20450222 is a wasteful number, since it uses less digits than its factorization.

20450222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786562.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 20450222 is about 4522.1921675223. The cubic root of 20450222 is about 273.4634838567.

Adding to 20450222 its reverse (22205402), we get a palindrome (42655624).

The spelling of 20450222 in words is "twenty million, four hundred fifty thousand, two hundred twenty-two".