20422226 has 16 divisors (see below), whose sum is σ = 35177760. Its totient is φ = 8794080.

The previous prime is 20422189. The next prime is 20422243. The reversal of 20422226 is 62222402.

It is a junction number, because it is equal to n+sod(n) for n = 20422198 and 20422207.

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, 24011 + ... + 24846.

It is an arithmetic number, because the mean of its divisors is an integer number (2198610).

Almost surely, 2^20422226 is an apocalyptic number.

20422226 is a deficient number, since it is larger than the sum of its proper divisors (14755534).

20422226 is a wasteful number, since it uses less digits than its factorization.

20422226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48889.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 20422226 is about 4519.0957060014. The cubic root of 20422226 is about 273.3386379432.

Adding to 20422226 its reverse (62222402), we get a palindrome (82644628).

The spelling of 20422226 in words is "twenty million, four hundred twenty-two thousand, two hundred twenty-six".