12392731 has 16 divisors (see below), whose sum is σ = 14192640. Its totient is φ = 10726560.

The previous prime is 12392719. The next prime is 12392741. The reversal of 12392731 is 13729321.

12392731 is a nontrivial binomial coefficient, being equal to C(4979, 2).

It is not a de Polignac number, because 12392731 - 2¹³ = 12384539 is a prime.

It is a super-2 number, since 2×12392731² = 307159563276722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12392731.

It is not an unprimeable number, because it can be changed into a prime (12392741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32166 + ... + 32548.

It is an arithmetic number, because the mean of its divisors is an integer number (887040).

Almost surely, 2^12392731 is an apocalyptic number.

12392731 is the 4978-th triangular number.

12392731 is the 1660-th centered nonagonal number.

12392731 is a deficient number, since it is larger than the sum of its proper divisors (1799909).

12392731 is a wasteful number, since it uses less digits than its factorization.

12392731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546.

The product of its digits is 2268, while the sum is 28.

The square root of 12392731 is about 3520.3310923832. The cubic root of 12392731 is about 231.4136687953.

The spelling of 12392731 in words is "twelve million, three hundred ninety-two thousand, seven hundred thirty-one".