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13205267 is a prime number
BaseRepresentation
bin110010010111…
…111100010011
3220211220012222
4302113330103
511340032032
61151011255
7220146215
oct62277423
926756188
1013205267
1174aa349
124509b2b
13297478a
141a7a5b5
15125ca12
hexc97f13

13205267 has 2 divisors, whose sum is σ = 13205268. Its totient is φ = 13205266.

The previous prime is 13205251. The next prime is 13205273. The reversal of 13205267 is 76250231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13205267 - 24 = 13205251 is a prime.

It is not a weakly prime, because it can be changed into another prime (13205207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6602633 + 6602634.

It is an arithmetic number, because the mean of its divisors is an integer number (6602634).

Almost surely, 213205267 is an apocalyptic number.

13205267 is a deficient number, since it is larger than the sum of its proper divisors (1).

13205267 is an equidigital number, since it uses as much as digits as its factorization.

13205267 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 13205267 is about 3633.9051996440. The cubic root of 13205267 is about 236.3645794162.

Adding to 13205267 its reverse (76250231), we get a palindrome (89455498).

The spelling of 13205267 in words is "thirteen million, two hundred five thousand, two hundred sixty-seven".