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13087105 = 519347397
BaseRepresentation
bin110001111011…
…000110000001
3220121220010121
4301323012001
511322241410
61144300241
7216144553
oct61730601
926556117
1013087105
117429599
124471681
132932a65
141a494d3
1512379da
hexc7b181

13087105 has 16 divisors (see below), whose sum is σ = 16620480. Its totient is φ = 9865152.

The previous prime is 13087099. The next prime is 13087111. The reversal of 13087105 is 50178031.

It is an interprime number because it is at equal distance from previous prime (13087099) and next prime (13087111).

It is a cyclic number.

It is not a de Polignac number, because 13087105 - 25 = 13087073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13087105.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 32767 + ... + 33163.

It is an arithmetic number, because the mean of its divisors is an integer number (1038780).

Almost surely, 213087105 is an apocalyptic number.

It is an amenable number.

13087105 is a deficient number, since it is larger than the sum of its proper divisors (3533375).

13087105 is a wasteful number, since it uses less digits than its factorization.

13087105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 13087105 is about 3617.6103991447. The cubic root of 13087105 is about 235.6574617496.

The spelling of 13087105 in words is "thirteen million, eighty-seven thousand, one hundred five".

Divisors: 1 5 19 95 347 397 1735 1985 6593 7543 32965 37715 137759 688795 2617421 13087105