14251440 has 160 divisors (see below), whose sum is σ = 53568000. Its totient is φ = 3059712.

The previous prime is 14251411. The next prime is 14251451. The reversal of 14251440 is 4415241.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28311 + ... + 28809.

It is an arithmetic number, because the mean of its divisors is an integer number (334800).

Almost surely, 2^14251440 is an apocalyptic number.

14251440 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 14251440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26784000).

14251440 is an abundant number, since it is smaller than the sum of its proper divisors (39316560).

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

14251440 is a wasteful number, since it uses less digits than its factorization.

14251440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 14251440 is about 3775.1079454765. The cubic root of 14251440 is about 242.4485454297.

Adding to 14251440 its reverse (4415241), we get a palindrome (18666681).

The spelling of 14251440 in words is "fourteen million, two hundred fifty-one thousand, four hundred forty".