12862981 has 8 divisors (see below), whose sum is σ = 13666400. Its totient is φ = 12072240.

The previous prime is 12862963. The next prime is 12863023. The reversal of 12862981 is 18926821.

12862981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 4-Lehmer number, since φ(12862981) divides (12862981-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 12862981 - 2⁹ = 12862469 is a prime.

It is a super-2 number, since 2×12862981² = 330912560412722, 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 12862981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12862901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1035 + ... + 5176.

It is an arithmetic number, because the mean of its divisors is an integer number (1708300).

Almost surely, 2^12862981 is an apocalyptic number.

12862981 is the 2071-st octagonal number.

It is an amenable number.

12862981 is a deficient number, since it is larger than the sum of its proper divisors (803419).

12862981 is a wasteful number, since it uses less digits than its factorization.

12862981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6339.

The product of its digits is 13824, while the sum is 37.

The square root of 12862981 is about 3586.4998257354. The cubic root of 12862981 is about 234.3044531023.

The spelling of 12862981 in words is "twelve million, eight hundred sixty-two thousand, nine hundred eighty-one".