22341440 has 84 divisors (see below), whose sum is σ = 58577988. Its totient is φ = 8110080.

The previous prime is 22341439. The next prime is 22341463. The reversal of 22341440 is 4414322.

It can be written as a sum of positive squares in 2 ways, for example, as 17106496 + 5234944 = 4136^2 + 2288^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 38432 + ... + 39008.

It is an arithmetic number, because the mean of its divisors is an integer number (697357).

Almost surely, 2^22341440 is an apocalyptic number.

22341440 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 22341440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29288994).

22341440 is an abundant number, since it is smaller than the sum of its proper divisors (36236548).

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

22341440 is a wasteful number, since it uses less digits than its factorization.

22341440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616 (or 595 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 22341440 is about 4726.6732487025. The cubic root of 22341440 is about 281.6460862072.

Adding to 22341440 its reverse (4414322), we get a palindrome (26755762).

The spelling of 22341440 in words is "twenty-two million, three hundred forty-one thousand, four hundred forty".