22320242 has 16 divisors (see below), whose sum is σ = 38501952. Its totient is φ = 9506160.

The previous prime is 22320241. The next prime is 22320251. The reversal of 22320242 is 24202322.

It is a super-3 number, since 3×22320242³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22320242.

It is not an unprimeable number, because it can be changed into a prime (22320241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2609 + ... + 7172.

It is an arithmetic number, because the mean of its divisors is an integer number (2406372).

Almost surely, 2^22320242 is an apocalyptic number.

22320242 is a deficient number, since it is larger than the sum of its proper divisors (16181710).

22320242 is a wasteful number, since it uses less digits than its factorization.

22320242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9953.

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

The square root of 22320242 is about 4724.4303360299. The cubic root of 22320242 is about 281.5569808946.

Adding to 22320242 its reverse (24202322), we get a palindrome (46522564).

The spelling of 22320242 in words is "twenty-two million, three hundred twenty thousand, two hundred forty-two".