12926731 has 4 divisors (see below), whose sum is σ = 12938464. Its totient is φ = 12915000.

The previous prime is 12926729. The next prime is 12926737. The reversal of 12926731 is 13762921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13762921 = 41 ⋅335681.

It is a cyclic number.

It is not a de Polignac number, because 12926731 - 2¹ = 12926729 is a prime.

It is a super-2 number, since 2×12926731² = 334200748692722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12926693 and 12926702.

It is not an unprimeable number, because it can be changed into a prime (12926737) 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 3 ways as a sum of consecutive naturals, for example, 4020 + ... + 6481.

It is an arithmetic number, because the mean of its divisors is an integer number (3234616).

Almost surely, 2^12926731 is an apocalyptic number.

12926731 is a deficient number, since it is larger than the sum of its proper divisors (11733).

12926731 is a wasteful number, since it uses less digits than its factorization.

12926731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11732.

The product of its digits is 4536, while the sum is 31.

The square root of 12926731 is about 3595.3763363520. The cubic root of 12926731 is about 234.6908928247.

The spelling of 12926731 in words is "twelve million, nine hundred twenty-six thousand, seven hundred thirty-one".