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260206427 = 1325033061
BaseRepresentation
bin11111000001001…
…10111101011011
3200010121212010002
433200212331123
51013103101202
641453043215
76306501215
oct1740467533
9603555102
10260206427
11123974a38
127318650b
1341ba7200
14267b55b5
1517c9d302
hexf826f5b

260206427 has 12 divisors (see below), whose sum is σ = 282414384. Its totient is φ = 239634720.

The previous prime is 260206421. The next prime is 260206439. The reversal of 260206427 is 724602062.

It is not a de Polignac number, because 260206427 - 210 = 260205403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 260206427.

It is not an unprimeable number, because it can be changed into a prime (260206421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83477 + ... + 86537.

It is an arithmetic number, because the mean of its divisors is an integer number (23534532).

Almost surely, 2260206427 is an apocalyptic number.

260206427 is a deficient number, since it is larger than the sum of its proper divisors (22207957).

260206427 is a wasteful number, since it uses less digits than its factorization.

260206427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3590 (or 3577 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 260206427 is about 16130.9152561161. The cubic root of 260206427 is about 638.4192981791.

Adding to 260206427 its reverse (724602062), we get a palindrome (984808489).

The spelling of 260206427 in words is "two hundred sixty million, two hundred six thousand, four hundred twenty-seven".

Divisors: 1 13 169 503 3061 6539 39793 85007 517309 1539683 20015879 260206427