13826731 has 4 divisors (see below), whose sum is σ = 13836592. Its totient is φ = 13816872.

The previous prime is 13826689. The next prime is 13826767. The reversal of 13826731 is 13762831.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13826731 - 2¹¹ = 13824683 is a prime.

It is a super-2 number, since 2×13826731² = 382356980292722, 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 = 13826693 and 13826702.

It is not an unprimeable number, because it can be changed into a prime (13827731) 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, 2391 + ... + 5776.

It is an arithmetic number, because the mean of its divisors is an integer number (3459148).

Almost surely, 2^13826731 is an apocalyptic number.

13826731 is a deficient number, since it is larger than the sum of its proper divisors (9861).

13826731 is an equidigital number, since it uses as much as digits as its factorization.

13826731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9860.

The product of its digits is 6048, while the sum is 31.

The square root of 13826731 is about 3718.4312552473. The cubic root of 13826731 is about 240.0158033575.

The spelling of 13826731 in words is "thirteen million, eight hundred twenty-six thousand, seven hundred thirty-one".