12864731 has 4 divisors (see below), whose sum is σ = 14034264. Its totient is φ = 11695200.

The previous prime is 12864707. The next prime is 12864739. The reversal of 12864731 is 13746821.

12864731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12864731 - 2⁶ = 12864667 is a prime.

It is a super-2 number, since 2×12864731² = 331002607404722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12864739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 584750 + ... + 584771.

It is an arithmetic number, because the mean of its divisors is an integer number (3508566).

Almost surely, 2^12864731 is an apocalyptic number.

12864731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12864731 is a deficient number, since it is larger than the sum of its proper divisors (1169533).

12864731 is a wasteful number, since it uses less digits than its factorization.

12864731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169532.

The product of its digits is 8064, while the sum is 32.

The square root of 12864731 is about 3586.7437878945. The cubic root of 12864731 is about 234.3150782754.

The spelling of 12864731 in words is "twelve million, eight hundred sixty-four thousand, seven hundred thirty-one".