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12613253 = 14278839
BaseRepresentation
bin110000000111…
…011010000101
3212201211010112
4300013122011
511212111003
61130202405
7212132222
oct60073205
925654115
1012613253
117135584
124283405
1327c8183
141964949
1511923d8
hexc07685

12613253 has 4 divisors (see below), whose sum is σ = 12623520. Its totient is φ = 12602988.

The previous prime is 12613243. The next prime is 12613291. The reversal of 12613253 is 35231621.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12613253 - 214 = 12596869 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 (12613243) 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, 2993 + ... + 5846.

It is an arithmetic number, because the mean of its divisors is an integer number (3155880).

Almost surely, 212613253 is an apocalyptic number.

It is an amenable number.

12613253 is a deficient number, since it is larger than the sum of its proper divisors (10267).

12613253 is an equidigital number, since it uses as much as digits as its factorization.

12613253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10266.

The product of its digits is 1080, while the sum is 23.

The square root of 12613253 is about 3551.5141841192. The cubic root of 12613253 is about 232.7782339821.

Adding to 12613253 its reverse (35231621), we get a palindrome (47844874).

It can be divided in two parts, 126132 and 53, that multiplied together give a triangular number (6684996 = T3656).

The spelling of 12613253 in words is "twelve million, six hundred thirteen thousand, two hundred fifty-three".

Divisors: 1 1427 8839 12613253