14140640 has 24 divisors (see below), whose sum is σ = 33407640. Its totient is φ = 5656192.

The previous prime is 14140639. The next prime is 14140667. The reversal of 14140640 is 4604141.

It is a happy number.

14140640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44030 + ... + 44349.

It is an arithmetic number, because the mean of its divisors is an integer number (1391985).

Almost surely, 2^14140640 is an apocalyptic number.

14140640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14140640 is an abundant number, since it is smaller than the sum of its proper divisors (19267000).

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

14140640 is an equidigital number, since it uses as much as digits as its factorization.

14140640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88394 (or 88386 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 14140640 is about 3760.4042335898. The cubic root of 14140640 is about 241.8185922763.

Adding to 14140640 its reverse (4604141), we get a palindrome (18744781).

The spelling of 14140640 in words is "fourteen million, one hundred forty thousand, six hundred forty".