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13001365 = 5131391439
BaseRepresentation
bin110001100110…
…001010010101
3220110112112001
4301212022111
511312020430
61142355301
7215336566
oct61461225
926415461
1013001365
117380133
12442bb31
132902a20
141a2616d
15121c3ca
hexc66295

13001365 has 16 divisors (see below), whose sum is σ = 16934400. Its totient is φ = 9525312.

The previous prime is 13001347. The next prime is 13001389. The reversal of 13001365 is 56310031.

It is a cyclic number.

It is not a de Polignac number, because 13001365 - 27 = 13001237 is a prime.

It is a congruent number.

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, 8316 + ... + 9754.

It is an arithmetic number, because the mean of its divisors is an integer number (1058400).

Almost surely, 213001365 is an apocalyptic number.

It is an amenable number.

13001365 is a deficient number, since it is larger than the sum of its proper divisors (3933035).

13001365 is a wasteful number, since it uses less digits than its factorization.

13001365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 13001365 is about 3605.7405619373. The cubic root of 13001365 is about 235.1416981555.

Adding to 13001365 its reverse (56310031), we get a palindrome (69311396).

It can be divided in two parts, 13001 and 365, that added together give a triangular number (13366 = T163).

The spelling of 13001365 in words is "thirteen million, one thousand, three hundred sixty-five".

Divisors: 1 5 13 65 139 695 1439 1807 7195 9035 18707 93535 200021 1000105 2600273 13001365