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13005115 = 52601023
BaseRepresentation
bin110001100111…
…000100111011
3220110201122221
4301213010323
511312130430
61142424511
7215353534
oct61470473
926421587
1013005115
117382a32
124432137
132904646
141a2768b
15121d57a
hexc6713b

13005115 has 4 divisors (see below), whose sum is σ = 15606144. Its totient is φ = 10404088.

The previous prime is 13005103. The next prime is 13005121. The reversal of 13005115 is 51150031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51150031 = 311650001.

It is a cyclic number.

It is not a de Polignac number, because 13005115 - 213 = 12996923 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1300507 + ... + 1300516.

It is an arithmetic number, because the mean of its divisors is an integer number (3901536).

Almost surely, 213005115 is an apocalyptic number.

13005115 is a deficient number, since it is larger than the sum of its proper divisors (2601029).

13005115 is an equidigital number, since it uses as much as digits as its factorization.

13005115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2601028.

The product of its (nonzero) digits is 75, while the sum is 16.

The square root of 13005115 is about 3606.2605285808. The cubic root of 13005115 is about 235.1643033871.

Adding to 13005115 its reverse (51150031), we get a palindrome (64155146).

The spelling of 13005115 in words is "thirteen million, five thousand, one hundred fifteen".

Divisors: 1 5 2601023 13005115