Search a number
-
+
13026281 is a prime number
BaseRepresentation
bin110001101100…
…001111101001
3220111210200212
4301230033221
511313320111
61143110505
7215502332
oct61541751
926453625
1013026281
117397924
124442435
132911178
141a31289
15122498b
hexc6c3e9

13026281 has 2 divisors, whose sum is σ = 13026282. Its totient is φ = 13026280.

The previous prime is 13026271. The next prime is 13026283. The reversal of 13026281 is 18262031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11669056 + 1357225 = 3416^2 + 1165^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13026281 is a prime.

It is a super-2 number, since 2×130262812 = 339367993381922, which contains 22 as substring.

Together with 13026283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13026283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6513140 + 6513141.

It is an arithmetic number, because the mean of its divisors is an integer number (6513141).

Almost surely, 213026281 is an apocalyptic number.

It is an amenable number.

13026281 is a deficient number, since it is larger than the sum of its proper divisors (1).

13026281 is an equidigital number, since it uses as much as digits as its factorization.

13026281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 13026281 is about 3609.1939543338. The cubic root of 13026281 is about 235.2918119296.

The spelling of 13026281 in words is "thirteen million, twenty-six thousand, two hundred eighty-one".