12816749 has 8 divisors (see below), whose sum is σ = 14067648. Its totient is φ = 11580160.

The previous prime is 12816737. The next prime is 12816751. The reversal of 12816749 is 94761821.

12816749 is digitally balanced in base 2, 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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12816749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12816719) 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, 1652 + ... + 5325.

It is an arithmetic number, because the mean of its divisors is an integer number (1758456).

Almost surely, 2^12816749 is an apocalyptic number.

It is an amenable number.

12816749 is a deficient number, since it is larger than the sum of its proper divisors (1250899).

12816749 is a wasteful number, since it uses less digits than its factorization.

12816749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7155.

The product of its digits is 24192, while the sum is 38.

The square root of 12816749 is about 3580.0487426849. The cubic root of 12816749 is about 234.0234045307.

The spelling of 12816749 in words is "twelve million, eight hundred sixteen thousand, seven hundred forty-nine".