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12975265 = 515716529
BaseRepresentation
bin110001011111…
…110010100001
3220102012201101
4301133302201
511310202030
61142034401
7215200522
oct61376241
926365641
1012975265
117362566
124418a01
1328c3b94
141a1a849
1512147ca
hexc5fca1

12975265 has 8 divisors (see below), whose sum is σ = 15670440. Its totient is φ = 10313472.

The previous prime is 12975257. The next prime is 12975317. The reversal of 12975265 is 56257921.

12975265 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2471184 + 10504081 = 1572^2 + 3241^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12975265 - 23 = 12975257 is a prime.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 7480 + ... + 9049.

It is an arithmetic number, because the mean of its divisors is an integer number (1958805).

Almost surely, 212975265 is an apocalyptic number.

It is an amenable number.

12975265 is a deficient number, since it is larger than the sum of its proper divisors (2695175).

12975265 is a wasteful number, since it uses less digits than its factorization.

12975265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16691.

The product of its digits is 37800, while the sum is 37.

The square root of 12975265 is about 3602.1195149523. The cubic root of 12975265 is about 234.9842452091.

The spelling of 12975265 in words is "twelve million, nine hundred seventy-five thousand, two hundred sixty-five".

Divisors: 1 5 157 785 16529 82645 2595053 12975265