14443681 has 12 divisors (see below), whose sum is σ = 16877700. Its totient is φ = 12324480.

The previous prime is 14443673. The next prime is 14443703. The reversal of 14443681 is 18634441.

It can be written as a sum of positive squares in 2 ways, for example, as 11621281 + 2822400 = 3409^2 + 1680^2 .

It is not a de Polignac number, because 14443681 - 2³ = 14443673 is a prime.

It is a super-2 number, since 2×14443681² = 417239841659522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (14443621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13245 + ... + 14293.

It is an arithmetic number, because the mean of its divisors is an integer number (1406475).

Almost surely, 2^14443681 is an apocalyptic number.

It is an amenable number.

14443681 is a deficient number, since it is larger than the sum of its proper divisors (2434019).

14443681 is a wasteful number, since it uses less digits than its factorization.

14443681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344 (or 1337 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 14443681 is about 3800.4843112425. The cubic root of 14443681 is about 243.5338284177.

It can be divided in two parts, 144 and 43681, that multiplied together give a square (6290064 = 2508²).

The spelling of 14443681 in words is "fourteen million, four hundred forty-three thousand, six hundred eighty-one".