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13005727 = 72265423
BaseRepresentation
bin110001100111…
…001110011111
3220110202111121
4301213032133
511312140402
61142431411
7215355400
oct61471637
926422447
1013005727
117383439
124432567
1329049c7
141a279a7
15121d837
hexc6739f

13005727 has 6 divisors (see below), whose sum is σ = 15129168. Its totient is φ = 11147724.

The previous prime is 13005721. The next prime is 13005739. The reversal of 13005727 is 72750031.

It is not a de Polignac number, because 13005727 - 23 = 13005719 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13005721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 132663 + ... + 132760.

It is an arithmetic number, because the mean of its divisors is an integer number (2521528).

Almost surely, 213005727 is an apocalyptic number.

13005727 is a deficient number, since it is larger than the sum of its proper divisors (2123441).

13005727 is an equidigital number, since it uses as much as digits as its factorization.

13005727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265437 (or 265430 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 13005727 is about 3606.3453800212. The cubic root of 13005727 is about 235.1679921485.

Adding to 13005727 its reverse (72750031), we get a palindrome (85755758).

The spelling of 13005727 in words is "thirteen million, five thousand, seven hundred twenty-seven".

Divisors: 1 7 49 265423 1857961 13005727