14145440 has 48 divisors (see below), whose sum is σ = 33657120. Its totient is φ = 5617920.

The previous prime is 14145431. The next prime is 14145457. The reversal of 14145440 is 4454141.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33551 + ... + 33969.

It is an arithmetic number, because the mean of its divisors is an integer number (701190).

Almost surely, 2^14145440 is an apocalyptic number.

14145440 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 14145440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16828560).

14145440 is an abundant number, since it is smaller than the sum of its proper divisors (19511680).

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

14145440 is a wasteful number, since it uses less digits than its factorization.

14145440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 14145440 is about 3761.0424086947. The cubic root of 14145440 is about 241.8459507252.

Adding to 14145440 its reverse (4454141), we get a palindrome (18599581).

The spelling of 14145440 in words is "fourteen million, one hundred forty-five thousand, four hundred forty".