20340222 has 64 divisors (see below), whose sum is σ = 49766400. Its totient is φ = 5412960.

The previous prime is 20340197. The next prime is 20340233. The reversal of 20340222 is 22204302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56479 + ... + 56837.

It is an arithmetic number, because the mean of its divisors is an integer number (777600).

Almost surely, 2^20340222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20340222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24883200).

20340222 is an abundant number, since it is smaller than the sum of its proper divisors (29426178).

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

20340222 is a wasteful number, since it uses less digits than its factorization.

20340222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 20340222 is about 4510.0135254786. The cubic root of 20340222 is about 272.9722898520.

Adding to 20340222 its reverse (22204302), we get a palindrome (42544524).

The spelling of 20340222 in words is "twenty million, three hundred forty thousand, two hundred twenty-two".