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12841181 = 109117809
BaseRepresentation
bin110000111111…
…000011011101
3220011101210022
4300333003131
511241404211
61135121525
7214101563
oct60770335
926141708
1012841181
117280851
1243732a5
132877b42
1419c3a33
1511d9bdb
hexc3f0dd

12841181 has 4 divisors (see below), whose sum is σ = 12959100. Its totient is φ = 12723264.

The previous prime is 12841139. The next prime is 12841193. The reversal of 12841181 is 18114821.

12841181 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18114821 = 29624649.

It can be written as a sum of positive squares in 2 ways, for example, as 10621081 + 2220100 = 3259^2 + 1490^2 .

It is a cyclic number.

It is not a de Polignac number, because 12841181 - 214 = 12824797 is a prime.

It is a super-2 number, since 2×128411812 = 329791858949522, 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 12841181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12849181) 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, 58796 + ... + 59013.

It is an arithmetic number, because the mean of its divisors is an integer number (3239775).

Almost surely, 212841181 is an apocalyptic number.

It is an amenable number.

12841181 is a deficient number, since it is larger than the sum of its proper divisors (117919).

12841181 is a wasteful number, since it uses less digits than its factorization.

12841181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117918.

The product of its digits is 512, while the sum is 26.

The square root of 12841181 is about 3583.4593621248. The cubic root of 12841181 is about 234.1720129533.

The spelling of 12841181 in words is "twelve million, eight hundred forty-one thousand, one hundred eighty-one".

Divisors: 1 109 117809 12841181