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13004441 = 29509881
BaseRepresentation
bin110001100110…
…111010011001
3220110200201222
4301212322121
511312120231
61142421425
7215351552
oct61467231
926420658
1013004441
11738247a
124431875
132904248
141a27329
15121d27b
hexc66e99

13004441 has 8 divisors (see below), whose sum is σ = 13494600. Its totient is φ = 12517120.

The previous prime is 13004393. The next prime is 13004449. The reversal of 13004441 is 14440031.

It can be written as a sum of positive squares in 4 ways, for example, as 1948816 + 11055625 = 1396^2 + 3325^2 .

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 13004441 - 26 = 13004377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13004449) 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, 14321 + ... + 15201.

It is an arithmetic number, because the mean of its divisors is an integer number (1686825).

Almost surely, 213004441 is an apocalyptic number.

It is an amenable number.

13004441 is a deficient number, since it is larger than the sum of its proper divisors (490159).

13004441 is an equidigital number, since it uses as much as digits as its factorization.

13004441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 13004441 is about 3606.1670787694. The cubic root of 13004441 is about 235.1602407939.

Adding to 13004441 its reverse (14440031), we get a palindrome (27444472).

The spelling of 13004441 in words is "thirteen million, four thousand, four hundred forty-one".

Divisors: 1 29 509 881 14761 25549 448429 13004441