20343222 has 24 divisors (see below), whose sum is σ = 44217576. Its totient is φ = 6759456.

The previous prime is 20343209. The next prime is 20343227. The reversal of 20343222 is 22234302.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20343195 and 20343204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20343227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4618 + ... + 7874.

It is an arithmetic number, because the mean of its divisors is an integer number (1842399).

Almost surely, 2^20343222 is an apocalyptic number.

20343222 is an abundant number, since it is smaller than the sum of its proper divisors (23874354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20343222 is a wasteful number, since it uses less digits than its factorization.

20343222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3612 (or 3609 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 20343222 is about 4510.3461064535. The cubic root of 20343222 is about 272.9857095124.

Adding to 20343222 its reverse (22234302), we get a palindrome (42577524).

The spelling of 20343222 in words is "twenty million, three hundred forty-three thousand, two hundred twenty-two".