14564440 has 64 divisors (see below), whose sum is σ = 36288000. Its totient is φ = 5216640.

The previous prime is 14564437. The next prime is 14564477. The reversal of 14564440 is 4446541.

It is a junction number, because it is equal to n+sod(n) for n = 14564399 and 14564408.

It is a congruent number.

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, 34551 + ... + 34969.

It is an arithmetic number, because the mean of its divisors is an integer number (567000).

Almost surely, 2^14564440 is an apocalyptic number.

14564440 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 14564440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18144000).

14564440 is an abundant number, since it is smaller than the sum of its proper divisors (21723560).

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

14564440 is a wasteful number, since it uses less digits than its factorization.

14564440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 14564440 is about 3816.3385594048. The cubic root of 14564440 is about 244.2106485139.

The spelling of 14564440 in words is "fourteen million, five hundred sixty-four thousand, four hundred forty".