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12613141 = 26946889
BaseRepresentation
bin110000000111…
…011000010101
3212201210222101
4300013120111
511212110031
61130202101
7212132002
oct60073025
925653871
1012613141
117135492
124283331
1327c80c8
1419648a9
151192361
hexc07615

12613141 has 4 divisors (see below), whose sum is σ = 12660300. Its totient is φ = 12565984.

The previous prime is 12613127. The next prime is 12613171. The reversal of 12613141 is 14131621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3132900 + 9480241 = 1770^2 + 3079^2 .

It is a cyclic number.

It is not a de Polignac number, because 12613141 - 25 = 12613109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12613171) 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, 23176 + ... + 23713.

It is an arithmetic number, because the mean of its divisors is an integer number (3165075).

Almost surely, 212613141 is an apocalyptic number.

It is an amenable number.

12613141 is a deficient number, since it is larger than the sum of its proper divisors (47159).

12613141 is an equidigital number, since it uses as much as digits as its factorization.

12613141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47158.

The product of its digits is 144, while the sum is 19.

The square root of 12613141 is about 3551.4984161618. The cubic root of 12613141 is about 232.7775449915. Note that the first 3 decimals are identical.

Adding to 12613141 its reverse (14131621), we get a palindrome (26744762).

The spelling of 12613141 in words is "twelve million, six hundred thirteen thousand, one hundred forty-one".

Divisors: 1 269 46889 12613141