14322440 has 64 divisors (see below), whose sum is σ = 36020160. Its totient is φ = 5080320.

The previous prime is 14322401. The next prime is 14322443. The reversal of 14322440 is 4422341.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14322443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18542 + ... + 19298.

It is an arithmetic number, because the mean of its divisors is an integer number (562815).

Almost surely, 2^14322440 is an apocalyptic number.

14322440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a pronic number, being equal to 3784×3785.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 14322440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18010080).

14322440 is an abundant number, since it is smaller than the sum of its proper divisors (21697720).

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

14322440 is a wasteful number, since it uses less digits than its factorization.

14322440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822 (or 818 counting only the distinct ones).

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

The square root of 14322440 is about 3784.4999669705. The cubic root of 14322440 is about 242.8505010541.

Adding to 14322440 its reverse (4422341), we get a palindrome (18744781).

Subtracting from 14322440 its reverse (4422341), we obtain a palindrome (9900099).

The spelling of 14322440 in words is "fourteen million, three hundred twenty-two thousand, four hundred forty".