14406440 has 64 divisors (see below), whose sum is σ = 33868800. Its totient is φ = 5511168.

The previous prime is 14406439. The next prime is 14406461. The reversal of 14406440 is 4460441.

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 15 ways as a sum of consecutive naturals, for example, 148472 + ... + 148568.

It is an arithmetic number, because the mean of its divisors is an integer number (529200).

Almost surely, 2^14406440 is an apocalyptic number.

14406440 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 14406440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16934400).

14406440 is an abundant number, since it is smaller than the sum of its proper divisors (19462360).

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

14406440 is a wasteful number, since it uses less digits than its factorization.

14406440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 14406440 is about 3795.5816418568. The cubic root of 14406440 is about 243.3243423629.

Adding to 14406440 its reverse (4460441), we get a palindrome (18866881).

The spelling of 14406440 in words is "fourteen million, four hundred six thousand, four hundred forty".