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13245329 = 17779137
BaseRepresentation
bin110010100001…
…101110010001
3220220221011202
4302201232101
511342322304
61151520545
7220404056
oct62415621
926827152
1013245329
117527459
124529155
132989a96
141a8b02d
15126981e
hexca1b91

13245329 has 4 divisors (see below), whose sum is σ = 14024484. Its totient is φ = 12466176.

The previous prime is 13245317. The next prime is 13245341. The reversal of 13245329 is 92354231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92354231 = 194860749.

It is an interprime number because it is at equal distance from previous prime (13245317) and next prime (13245341).

It can be written as a sum of positive squares in 2 ways, for example, as 4631104 + 8614225 = 2152^2 + 2935^2 .

It is a cyclic number.

It is not a de Polignac number, because 13245329 - 220 = 12196753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13245359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389552 + ... + 389585.

It is an arithmetic number, because the mean of its divisors is an integer number (3506121).

Almost surely, 213245329 is an apocalyptic number.

It is an amenable number.

13245329 is a deficient number, since it is larger than the sum of its proper divisors (779155).

13245329 is an equidigital number, since it uses as much as digits as its factorization.

13245329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779154.

The product of its digits is 6480, while the sum is 29.

The square root of 13245329 is about 3639.4132768896. The cubic root of 13245329 is about 236.6033648946.

The spelling of 13245329 in words is "thirteen million, two hundred forty-five thousand, three hundred twenty-nine".

Divisors: 1 17 779137 13245329