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13286530 = 251328653
BaseRepresentation
bin110010101011…
…110010000010
3221000000200201
4302223302002
511400132110
61152435414
7220635145
oct62536202
927000621
1013286530
117555404
124548b6a
1329a276a
141a9c05c
151276b3a
hexcabc82

13286530 has 8 divisors (see below), whose sum is σ = 23915772. Its totient is φ = 5314608.

The previous prime is 13286519. The next prime is 13286531. The reversal of 13286530 is 3568231.

It can be written as a sum of positive squares in 2 ways, for example, as 12510369 + 776161 = 3537^2 + 881^2 .

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

It is not an unprimeable number, because it can be changed into a prime (13286531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 664317 + ... + 664336.

Almost surely, 213286530 is an apocalyptic number.

13286530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13286530 is a deficient number, since it is larger than the sum of its proper divisors (10629242).

13286530 is a wasteful number, since it uses less digits than its factorization.

13286530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328660.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 13286530 is about 3645.0692723184. The cubic root of 13286530 is about 236.8484375781.

The spelling of 13286530 in words is "thirteen million, two hundred eighty-six thousand, five hundred thirty".

Divisors: 1 2 5 10 1328653 2657306 6643265 13286530