20322242 has 16 divisors (see below), whose sum is σ = 32361120. Its totient is φ = 9538368.

The previous prime is 20322241. The next prime is 20322257. The reversal of 20322242 is 24222302.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 20322242.

It is not an unprimeable number, because it can be changed into a prime (20322241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21953 + ... + 22859.

It is an arithmetic number, because the mean of its divisors is an integer number (2022570).

Almost surely, 2^20322242 is an apocalyptic number.

20322242 is a deficient number, since it is larger than the sum of its proper divisors (12038878).

20322242 is a wasteful number, since it uses less digits than its factorization.

20322242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 20322242 is about 4508.0197426364. The cubic root of 20322242 is about 272.8918336889.

Adding to 20322242 its reverse (24222302), we get a palindrome (44544544).

The spelling of 20322242 in words is "twenty million, three hundred twenty-two thousand, two hundred forty-two".