12744381 has 8 divisors (see below), whose sum is σ = 18299680. Its totient is φ = 7842672.

The previous prime is 12744377. The next prime is 12744397. The reversal of 12744381 is 18344721.

12744381 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12744381 - 2² = 12744377 is a prime.

It is a super-2 number, since 2×12744381² = 324838494146322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12744331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163351 + ... + 163428.

It is an arithmetic number, because the mean of its divisors is an integer number (2287460).

Almost surely, 2^12744381 is an apocalyptic number.

It is an amenable number.

12744381 is a deficient number, since it is larger than the sum of its proper divisors (5555299).

12744381 is a wasteful number, since it uses less digits than its factorization.

12744381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326795.

The product of its digits is 5376, while the sum is 30.

The square root of 12744381 is about 3569.9273101843. The cubic root of 12744381 is about 233.5821126625.

The spelling of 12744381 in words is "twelve million, seven hundred forty-four thousand, three hundred eighty-one".