22340320 has 24 divisors (see below), whose sum is σ = 52779384. Its totient is φ = 8936064.

The previous prime is 22340309. The next prime is 22340321. The reversal of 22340320 is 2304322.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 22340294 and 22340303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22340321) 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 3 ways as a sum of consecutive naturals, for example, 69654 + ... + 69973.

It is an arithmetic number, because the mean of its divisors is an integer number (2199141).

Almost surely, 2^22340320 is an apocalyptic number.

22340320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22340320 is an abundant number, since it is smaller than the sum of its proper divisors (30439064).

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

22340320 is a wasteful number, since it uses less digits than its factorization.

22340320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139642 (or 139634 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 22340320 is about 4726.5547706548. The cubic root of 22340320 is about 281.6413797232.

Adding to 22340320 its reverse (2304322), we get a palindrome (24644642).

The spelling of 22340320 in words is "twenty-two million, three hundred forty thousand, three hundred twenty".