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8268681 = 317197823
BaseRepresentation
bin11111100010101110001001
3120120002111110
4133202232021
54104044211
6453120533
7130165641
oct37425611
916502443
108268681
114738423
122929149
131936815
141153521
15ad4ea6
hex7e2b89

8268681 has 16 divisors (see below), whose sum is σ = 11746944. Its totient is φ = 5155584.

The previous prime is 8268679. The next prime is 8268691. The reversal of 8268681 is 1868628.

It is not a de Polignac number, because 8268681 - 21 = 8268679 is a prime.

It is a super-2 number, since 2×82686812 = 136742170959522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8268641) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9636 + ... + 10458.

It is an arithmetic number, because the mean of its divisors is an integer number (734184).

Almost surely, 28268681 is an apocalyptic number.

It is an amenable number.

8268681 is a deficient number, since it is larger than the sum of its proper divisors (3478263).

8268681 is a wasteful number, since it uses less digits than its factorization.

8268681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040.

The product of its digits is 36864, while the sum is 39.

The square root of 8268681 is about 2875.5314291449. The cubic root of 8268681 is about 202.2144000092.

The spelling of 8268681 in words is "eight million, two hundred sixty-eight thousand, six hundred eighty-one".

Divisors: 1 3 17 51 197 591 823 2469 3349 10047 13991 41973 162131 486393 2756227 8268681