13744287 has 6 divisors (see below), whose sum is σ = 19852872. Its totient is φ = 9162852.

The previous prime is 13744259. The next prime is 13744319. The reversal of 13744287 is 78244731.

It is a happy number.

13744287 is a `hidden beast` number, since 1 + 374 + 4 + 287 = 666.

It is not a de Polignac number, because 13744287 - 2¹⁰ = 13743263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13744187) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 763563 + ... + 763580.

It is an arithmetic number, because the mean of its divisors is an integer number (3308812).

Almost surely, 2^13744287 is an apocalyptic number.

13744287 is a deficient number, since it is larger than the sum of its proper divisors (6108585).

13744287 is a wasteful number, since it uses less digits than its factorization.

13744287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527149 (or 1527146 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 13744287 is about 3707.3288227510. The cubic root of 13744287 is about 239.5378084002.

The spelling of 13744287 in words is "thirteen million, seven hundred forty-four thousand, two hundred eighty-seven".