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13245929 = 28014729
BaseRepresentation
bin110010100001…
…110111101001
3220220221222222
4302201313221
511342332204
61151523425
7220405604
oct62416751
926827888
1013245929
117527954
124529575
13298a138
141a8b33b
151269abe
hexca1de9

13245929 has 4 divisors (see below), whose sum is σ = 13253460. Its totient is φ = 13238400.

The previous prime is 13245917. The next prime is 13245931. The reversal of 13245929 is 92954231.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2715904 + 10530025 = 1648^2 + 3245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13245929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (13248929) 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 3 ways as a sum of consecutive naturals, for example, 437 + ... + 5165.

It is an arithmetic number, because the mean of its divisors is an integer number (3313365).

Almost surely, 213245929 is an apocalyptic number.

It is an amenable number.

13245929 is a deficient number, since it is larger than the sum of its proper divisors (7531).

13245929 is an equidigital number, since it uses as much as digits as its factorization.

13245929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7530.

The product of its digits is 19440, while the sum is 35.

The square root of 13245929 is about 3639.4957068253. The cubic root of 13245929 is about 236.6069374717.

The spelling of 13245929 in words is "thirteen million, two hundred forty-five thousand, nine hundred twenty-nine".

Divisors: 1 2801 4729 13245929