20422210 has 8 divisors (see below), whose sum is σ = 36759996. Its totient is φ = 8168880.

The previous prime is 20422189. The next prime is 20422243. The reversal of 20422210 is 1222402.

It can be written as a sum of positive squares in 2 ways, for example, as 16345849 + 4076361 = 4043^2 + 2019^2 .

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

It is a super-2 number, since 2×20422210² = 834133322568200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1021101 + ... + 1021120.

Almost surely, 2^20422210 is an apocalyptic number.

20422210 is a deficient number, since it is larger than the sum of its proper divisors (16337786).

20422210 is a wasteful number, since it uses less digits than its factorization.

20422210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2042228.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 20422210 is about 4519.0939357353. The cubic root of 20422210 is about 273.3385665599.

Adding to 20422210 its reverse (1222402), we get a palindrome (21644612).

The spelling of 20422210 in words is "twenty million, four hundred twenty-two thousand, two hundred ten".