14644140 has 144 divisors (see below), whose sum is σ = 50676192. Its totient is φ = 3139584.

The previous prime is 14644129. The next prime is 14644141. The reversal of 14644140 is 4144641.

It is a self number, because there is not a number n which added to its sum of digits gives 14644140.

It is not an unprimeable number, because it can be changed into a prime (14644141) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49834 + ... + 50126.

It is an arithmetic number, because the mean of its divisors is an integer number (351918).

Almost surely, 2^14644140 is an apocalyptic number.

14644140 is a gapful number since it is divisible by the number (10) 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 14644140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25338096).

14644140 is an abundant number, since it is smaller than the sum of its proper divisors (36032052).

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

14644140 is a wasteful number, since it uses less digits than its factorization.

14644140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 14644140 is about 3826.7662588666. The cubic root of 14644140 is about 244.6552975617.

Adding to 14644140 its reverse (4144641), we get a palindrome (18788781).

The spelling of 14644140 in words is "fourteen million, six hundred forty-four thousand, one hundred forty".