22322340 has 144 divisors (see below), whose sum is σ = 73120320. Its totient is φ = 5495040.

The previous prime is 22322303. The next prime is 22322341. The reversal of 22322340 is 4322322.

22322340 is a `hidden beast` number, since 2 + 2 + 322 + 340 = 666.

It is a super-3 number, since 3×22322340³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22322341) 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 47 ways as a sum of consecutive naturals, for example, 208567 + ... + 208673.

It is an arithmetic number, because the mean of its divisors is an integer number (507780).

Almost surely, 2^22322340 is an apocalyptic number.

22322340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22322340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36560160).

22322340 is an abundant number, since it is smaller than the sum of its proper divisors (50797980).

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

22322340 is a wasteful number, since it uses less digits than its factorization.

22322340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 22322340 is about 4724.6523681642. The cubic root of 22322340 is about 281.5658023049.

Subtracting from 22322340 its sum of digits (18), we obtain a palindrome (22322322).

Adding to 22322340 its reverse (4322322), we get a palindrome (26644662).

The spelling of 22322340 in words is "twenty-two million, three hundred twenty-two thousand, three hundred forty".