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13007445 = 3511312543
BaseRepresentation
bin110001100111…
…101001010101
3220110211212020
4301213221111
511312214240
61142443353
7215363403
oct61475125
926424766
1013007445
117384760
124433559
132905719
141a28473
15121e0d0
hexc67a55

13007445 has 32 divisors (see below), whose sum is σ = 23445504. Its totient is φ = 6100800.

The previous prime is 13007441. The next prime is 13007453. The reversal of 13007445 is 54470031.

It is not a de Polignac number, because 13007445 - 22 = 13007441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13007441) 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 31 ways as a sum of consecutive naturals, for example, 3844 + ... + 6386.

It is an arithmetic number, because the mean of its divisors is an integer number (732672).

Almost surely, 213007445 is an apocalyptic number.

13007445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13007445 is a deficient number, since it is larger than the sum of its proper divisors (10438059).

13007445 is a wasteful number, since it uses less digits than its factorization.

13007445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 13007445 is about 3606.5835634295. The cubic root of 13007445 is about 235.1783465824.

Adding to 13007445 its reverse (54470031), we get a palindrome (67477476).

The spelling of 13007445 in words is "thirteen million, seven thousand, four hundred forty-five".

Divisors: 1 3 5 11 15 31 33 55 93 155 165 341 465 1023 1705 2543 5115 7629 12715 27973 38145 78833 83919 139865 236499 394165 419595 867163 1182495 2601489 4335815 13007445