14143440 has 80 divisors (see below), whose sum is σ = 45282816. Its totient is φ = 3648000.

The previous prime is 14143427. The next prime is 14143453. The reversal of 14143440 is 4434141.

It is an interprime number because it is at equal distance from previous prime (14143427) and next prime (14143453).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6490 + ... + 8390.

Almost surely, 2^14143440 is an apocalyptic number.

14143440 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 14143440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22641408).

14143440 is an abundant number, since it is smaller than the sum of its proper divisors (31139376).

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

14143440 is a wasteful number, since it uses less digits than its factorization.

14143440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1948 (or 1942 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 14143440 is about 3760.7765155616. The cubic root of 14143440 is about 241.8345521238.

Adding to 14143440 its reverse (4434141), we get a palindrome (18577581).

The spelling of 14143440 in words is "fourteen million, one hundred forty-three thousand, four hundred forty".