Search a number
-
+
12814081 = 71830583
BaseRepresentation
bin110000111000…
…011100000001
3220010000121121
4300320130001
511240022311
61134352241
7213626560
oct60703401
926100547
1012814081
117262455
12435b681
1328686c7
1419b7bd7
1511d1b71
hexc38701

12814081 has 4 divisors (see below), whose sum is σ = 14644672. Its totient is φ = 10983492.

The previous prime is 12814079. The next prime is 12814093. The reversal of 12814081 is 18041821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12814081 - 21 = 12814079 is a prime.

It is a super-2 number, since 2×128140812 = 328401343749122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12814051) 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, 915285 + ... + 915298.

It is an arithmetic number, because the mean of its divisors is an integer number (3661168).

Almost surely, 212814081 is an apocalyptic number.

It is an amenable number.

12814081 is a deficient number, since it is larger than the sum of its proper divisors (1830591).

12814081 is an equidigital number, since it uses as much as digits as its factorization.

12814081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830590.

The product of its (nonzero) digits is 512, while the sum is 25.

The square root of 12814081 is about 3579.6761026663. The cubic root of 12814081 is about 234.0071649010.

It can be divided in two parts, 1281 and 4081, that multiplied together give a triangular number (5227761 = T3233).

The spelling of 12814081 in words is "twelve million, eight hundred fourteen thousand, eighty-one".

Divisors: 1 7 1830583 12814081