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13005005 = 513238699
BaseRepresentation
bin110001100111…
…000011001101
3220110201111212
4301213003031
511312130010
61142424205
7215353316
oct61470315
926421455
1013005005
117382942
124432065
132904590
141a2760d
15121d505
hexc670cd

13005005 has 16 divisors (see below), whose sum is σ = 17539200. Its totient is φ = 9185088.

The previous prime is 13004993. The next prime is 13005007. The reversal of 13005005 is 50050031.

13005005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 13005005 - 24 = 13004989 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13005007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2855 + ... + 5844.

It is an arithmetic number, because the mean of its divisors is an integer number (1096200).

Almost surely, 213005005 is an apocalyptic number.

It is an amenable number.

13005005 is a deficient number, since it is larger than the sum of its proper divisors (4534195).

13005005 is a wasteful number, since it uses less digits than its factorization.

13005005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8740.

The product of its (nonzero) digits is 75, while the sum is 14.

The square root of 13005005 is about 3606.2452772933. The cubic root of 13005005 is about 235.1636403622.

Adding to 13005005 its reverse (50050031), we get a palindrome (63055036).

It can be divided in two parts, 1300500 and 5, that multiplied together give a square (6502500 = 25502).

The spelling of 13005005 in words is "thirteen million, five thousand, five".

Divisors: 1 5 13 23 65 115 299 1495 8699 43495 113087 200077 565435 1000385 2601001 13005005