20422250 has 16 divisors (see below), whose sum is σ = 38230920. Its totient is φ = 8168800.

The previous prime is 20422249. The next prime is 20422267. The reversal of 20422250 is 5222402.

It can be written as a sum of positive squares in 4 ways, for example, as 11015761 + 9406489 = 3319^2 + 3067^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40595 + ... + 41094.

Almost surely, 2^20422250 is an apocalyptic number.

20422250 is a deficient number, since it is larger than the sum of its proper divisors (17808670).

20422250 is an equidigital number, since it uses as much as digits as its factorization.

20422250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81706 (or 81696 counting only the distinct ones).

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

The square root of 20422250 is about 4519.0983613991. The cubic root of 20422250 is about 273.3387450181.

Adding to 20422250 its reverse (5222402), we get a palindrome (25644652).

The spelling of 20422250 in words is "twenty million, four hundred twenty-two thousand, two hundred fifty".