20222686 has 24 divisors (see below), whose sum is σ = 34303464. Its totient is φ = 8867040.

The previous prime is 20222621. The next prime is 20222689. The reversal of 20222686 is 68622202.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222689) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 17956 + ... + 19048.

It is an arithmetic number, because the mean of its divisors is an integer number (1429311).

Almost surely, 2^20222686 is an apocalyptic number.

20222686 is a deficient number, since it is larger than the sum of its proper divisors (14080778).

20222686 is a wasteful number, since it uses less digits than its factorization.

20222686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164 (or 1135 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 20222686 is about 4496.9640870258. The cubic root of 20222686 is about 272.4454835812.

Adding to 20222686 its reverse (68622202), we get a palindrome (88844888).

The spelling of 20222686 in words is "twenty million, two hundred twenty-two thousand, six hundred eighty-six".