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12705275 = 521147983
BaseRepresentation
bin110000011101…
…110111111011
3212220111100202
4300131313323
511223032100
61132152415
7212664422
oct60356773
925814322
1012705275
117198730
12430870b
13282b01b
14198a2b9
1511ae7d5
hexc1ddfb

12705275 has 24 divisors (see below), whose sum is σ = 17570304. Its totient is φ = 9034400.

The previous prime is 12705271. The next prime is 12705289. The reversal of 12705275 is 57250721.

It is not a de Polignac number, because 12705275 - 22 = 12705271 is a prime.

It is a super-2 number, since 2×127052752 = 322848025651250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12705271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12434 + ... + 13416.

It is an arithmetic number, because the mean of its divisors is an integer number (732096).

Almost surely, 212705275 is an apocalyptic number.

12705275 is a deficient number, since it is larger than the sum of its proper divisors (4865029).

12705275 is a wasteful number, since it uses less digits than its factorization.

12705275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051 (or 1046 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 12705275 is about 3564.4459597531. The cubic root of 12705275 is about 233.3429531181.

Adding to 12705275 its reverse (57250721), we get a palindrome (69955996).

The spelling of 12705275 in words is "twelve million, seven hundred five thousand, two hundred seventy-five".

Divisors: 1 5 11 25 47 55 235 275 517 983 1175 2585 4915 10813 12925 24575 46201 54065 231005 270325 508211 1155025 2541055 12705275