13945744 has 20 divisors (see below), whose sum is σ = 27751324. Its totient is φ = 6784128.

The previous prime is 13945741. The next prime is 13945747. The reversal of 13945744 is 44754931.

It is an interprime number because it is at equal distance from previous prime (13945741) and next prime (13945747).

It can be written as a sum of positive squares in 2 ways, for example, as 5017600 + 8928144 = 2240^2 + 2988^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (13945741) 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 3 ways as a sum of consecutive naturals, for example, 11187 + ... + 12370.

Almost surely, 2^13945744 is an apocalyptic number.

It is an amenable number.

13945744 is a deficient number, since it is larger than the sum of its proper divisors (13805580).

13945744 is a wasteful number, since it uses less digits than its factorization.

13945744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23602 (or 23596 counting only the distinct ones).

The product of its digits is 60480, while the sum is 37.

The square root of 13945744 is about 3734.4000856898. The cubic root of 13945744 is about 240.7024788785.

The spelling of 13945744 in words is "thirteen million, nine hundred forty-five thousand, seven hundred forty-four".