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13330205 = 57254409
BaseRepresentation
bin110010110110…
…011100011101
3221002020121022
4302312130131
511403031310
61153413525
7221206400
oct62663435
927066538
1013330205
1175851a9
12456a2a5
1329b95c5
141aadd37
151284a55
hexcb671d

13330205 has 12 divisors (see below), whose sum is σ = 18608220. Its totient is φ = 9140544.

The previous prime is 13330199. The next prime is 13330231. The reversal of 13330205 is 50203331.

It can be written as a sum of positive squares in 2 ways, for example, as 3363556 + 9966649 = 1834^2 + 3157^2 .

It is not a de Polignac number, because 13330205 - 222 = 9135901 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26960 + ... + 27449.

It is an arithmetic number, because the mean of its divisors is an integer number (1550685).

Almost surely, 213330205 is an apocalyptic number.

It is an amenable number.

13330205 is a deficient number, since it is larger than the sum of its proper divisors (5278015).

13330205 is an equidigital number, since it uses as much as digits as its factorization.

13330205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54428 (or 54421 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 13330205 is about 3651.0553268884. The cubic root of 13330205 is about 237.1076736023.

Adding to 13330205 its reverse (50203331), we get a palindrome (63533536).

The spelling of 13330205 in words is "thirteen million, three hundred thirty thousand, two hundred five".

Divisors: 1 5 7 35 49 245 54409 272045 380863 1904315 2666041 13330205