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13000019 = 174011907
BaseRepresentation
bin110001100101…
…110101010011
3220110110200012
4301211311103
511312000034
61142345135
7215332634
oct61456523
926413605
1013000019
11737a11a
12442b1ab
132902226
141a2588b
15121bcce
hexc65d53

13000019 has 8 divisors (see below), whose sum is σ = 13806288. Its totient is φ = 12198400.

The previous prime is 12999997. The next prime is 13000027. The reversal of 13000019 is 91000031.

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

It is a cyclic number.

It is not a de Polignac number, because 13000019 - 216 = 12934483 is a prime.

It is a super-2 number, since 2×130000192 = 338000988000722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12999967 and 13000012.

It is not an unprimeable number, because it can be changed into a prime (13000049) 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 7 ways as a sum of consecutive naturals, for example, 5864 + ... + 7770.

It is an arithmetic number, because the mean of its divisors is an integer number (1725786).

Almost surely, 213000019 is an apocalyptic number.

13000019 is a deficient number, since it is larger than the sum of its proper divisors (806269).

13000019 is a wasteful number, since it uses less digits than its factorization.

13000019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2325.

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 13000019 is about 3605.5539102890. The cubic root of 13000019 is about 235.1335833242.

The spelling of 13000019 in words is "thirteen million, nineteen", and thus it is an aban number and an uban number.

Divisors: 1 17 401 1907 6817 32419 764707 13000019