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10680287 = 44324109
BaseRepresentation
bin101000101111…
…011111011111
3202002121121012
4220233133133
510213232122
61020525435
7156531602
oct50573737
922077535
1010680287
116035292
1236b087b
13229c3c7
1415c0339
15e0e7e2
hexa2f7df

10680287 has 4 divisors (see below), whose sum is σ = 10704840. Its totient is φ = 10655736.

The previous prime is 10680283. The next prime is 10680311. The reversal of 10680287 is 78208601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78208601 = 337232073.

It is a cyclic number.

It is not a de Polignac number, because 10680287 - 22 = 10680283 is a prime.

It is a super-2 number, since 2×106802872 = 228137060804738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10680281) 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 3 ways as a sum of consecutive naturals, for example, 11612 + ... + 12497.

It is an arithmetic number, because the mean of its divisors is an integer number (2676210).

Almost surely, 210680287 is an apocalyptic number.

10680287 is a deficient number, since it is larger than the sum of its proper divisors (24553).

10680287 is an equidigital number, since it uses as much as digits as its factorization.

10680287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24552.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 10680287 is about 3268.0708376655. The cubic root of 10680287 is about 220.2221378869. Note that the first 3 decimals are identical.

Adding to 10680287 its reverse (78208601), we get a palindrome (88888888).

The spelling of 10680287 in words is "ten million, six hundred eighty thousand, two hundred eighty-seven".

Divisors: 1 443 24109 10680287