14455440 has 120 divisors (see below), whose sum is σ = 51445368. Its totient is φ = 3624960.

The previous prime is 14455433. The next prime is 14455487. The reversal of 14455440 is 4455441.

It can be written as a sum of positive squares in 4 ways, for example, as 6230016 + 8225424 = 2496^2 + 2868^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11650 + ... + 12830.

Almost surely, 2^14455440 is an apocalyptic number.

14455440 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 14455440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25722684).

14455440 is an abundant number, since it is smaller than the sum of its proper divisors (36989928).

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

14455440 is a wasteful number, since it uses less digits than its factorization.

14455440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217 (or 1208 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 14455440 is about 3802.0310361700. The cubic root of 14455440 is about 243.5998996982.

Subtracting from 14455440 its reverse (4455441), we obtain a palindrome (9999999).

The spelling of 14455440 in words is "fourteen million, four hundred fifty-five thousand, four hundred forty".