22340242 has 16 divisors (see below), whose sum is σ = 34292160. Its totient is φ = 10911472.

The previous prime is 22340161. The next prime is 22340249. The reversal of 22340242 is 24204322.

It is not an unprimeable number, because it can be changed into a prime (22340249) 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, 44163 + ... + 44665.

It is an arithmetic number, because the mean of its divisors is an integer number (2143260).

Almost surely, 2^22340242 is an apocalyptic number.

22340242 is a deficient number, since it is larger than the sum of its proper divisors (11951918).

22340242 is a wasteful number, since it uses less digits than its factorization.

22340242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 22340242 is about 4726.5465193945. The cubic root of 22340242 is about 281.6410519444.

Adding to 22340242 its reverse (24204322), we get a palindrome (46544564).

It can be divided in two parts, 223 and 40242, that multiplied together give a triangular number (8973966 = T₄₂₃₆).

The spelling of 22340242 in words is "twenty-two million, three hundred forty thousand, two hundred forty-two".