20422450 has 24 divisors (see below), whose sum is σ = 38170548. Its totient is φ = 8129280.

The previous prime is 20422447. The next prime is 20422499. The reversal of 20422450 is 5422402.

It can be written as a sum of positive squares in 6 ways, for example, as 628849 + 19793601 = 793^2 + 4449^2 .

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, 10774 + ... + 12526.

Almost surely, 2^20422450 is an apocalyptic number.

20422450 is a deficient number, since it is larger than the sum of its proper divisors (17748098).

20422450 is a wasteful number, since it uses less digits than its factorization.

20422450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998 (or 1993 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 20422450 is about 4519.1204896528. The cubic root of 20422450 is about 273.3396373059.

Adding to 20422450 its reverse (5422402), we get a palindrome (25844852).

The spelling of 20422450 in words is "twenty million, four hundred twenty-two thousand, four hundred fifty".