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12838481 is a prime number
BaseRepresentation
bin110000111110…
…011001010001
3220011021002022
4300332121101
511241312411
61135101225
7214060655
oct60763121
926137068
1012838481
117279817
124371815
132876846
1419c2a65
1511d8edb
hexc3e651

12838481 has 2 divisors, whose sum is σ = 12838482. Its totient is φ = 12838480.

The previous prime is 12838477. The next prime is 12838493. The reversal of 12838481 is 18483821.

12838481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10923025 + 1915456 = 3305^2 + 1384^2 .

It is an emirp because it is prime and its reverse (18483821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12838481 - 22 = 12838477 is a prime.

It is a super-2 number, since 2×128384812 = 329653188774722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12838411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6419240 + 6419241.

It is an arithmetic number, because the mean of its divisors is an integer number (6419241).

Almost surely, 212838481 is an apocalyptic number.

It is an amenable number.

12838481 is a deficient number, since it is larger than the sum of its proper divisors (1).

12838481 is an equidigital number, since it uses as much as digits as its factorization.

12838481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12288, while the sum is 35.

The square root of 12838481 is about 3583.0826113837. The cubic root of 12838481 is about 234.1555993863.

The spelling of 12838481 in words is "twelve million, eight hundred thirty-eight thousand, four hundred eighty-one".