12786081 has 16 divisors (see below), whose sum is σ = 21255168. Its totient is φ = 6642000.

The previous prime is 12786061. The next prime is 12786089. The reversal of 12786081 is 18068721.

It is a happy number.

12786081 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12786081 - 2⁵ = 12786049 is a prime.

It is a super-2 number, since 2×12786081² = 326967734677122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (12786089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27445 + ... + 27906.

It is an arithmetic number, because the mean of its divisors is an integer number (1328448).

Almost surely, 2^12786081 is an apocalyptic number.

12786081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12786081 is a deficient number, since it is larger than the sum of its proper divisors (8469087).

12786081 is a wasteful number, since it uses less digits than its factorization.

12786081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55372.

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 12786081 is about 3575.7629955018. The cubic root of 12786081 is about 233.8365978814.

The spelling of 12786081 in words is "twelve million, seven hundred eighty-six thousand, eighty-one".