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13005019 = 372711297
BaseRepresentation
bin110001100111…
…000011011011
3220110201112101
4301213003123
511312130034
61142424231
7215353336
oct61470333
926421471
1013005019
117382955
124432077
1329045a1
141a2761d
15121d514
hexc670db

13005019 has 8 divisors (see below), whose sum is σ = 13416128. Its totient is φ = 12597120.

The previous prime is 13005011. The next prime is 13005029. The reversal of 13005019 is 91050031.

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 13005019 - 23 = 13005011 is a prime.

It is a super-2 number, since 2×130050192 = 338261038380722, 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 = 13004987 and 13005005.

It is not an unprimeable number, because it can be changed into a prime (13005011) 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, 9379 + ... + 10675.

It is an arithmetic number, because the mean of its divisors is an integer number (1677016).

Almost surely, 213005019 is an apocalyptic number.

13005019 is a deficient number, since it is larger than the sum of its proper divisors (411109).

13005019 is a wasteful number, since it uses less digits than its factorization.

13005019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605.

The product of its (nonzero) digits is 135, while the sum is 19.

The square root of 13005019 is about 3606.2472183698. The cubic root of 13005019 is about 235.1637247474.

The spelling of 13005019 in words is "thirteen million, five thousand, nineteen".

Divisors: 1 37 271 1297 10027 47989 351487 13005019