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13029913 = 139710333
BaseRepresentation
bin110001101101…
…001000011001
3220111222200101
4301231020121
511313424123
61143135401
7215516041
oct61551031
926458611
1013029913
11739a626
124444561
132912a10
141a32721
151225aad
hexc6d219

13029913 has 8 divisors (see below), whose sum is σ = 14178248. Its totient is φ = 11902464.

The previous prime is 13029911. The next prime is 13029931. The reversal of 13029913 is 31992031.

It can be written as a sum of positive squares in 4 ways, for example, as 1106704 + 11923209 = 1052^2 + 3453^2 .

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 13029913 - 21 = 13029911 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (13029911) 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 7 ways as a sum of consecutive naturals, for example, 3906 + ... + 6427.

It is an arithmetic number, because the mean of its divisors is an integer number (1772281).

Almost surely, 213029913 is an apocalyptic number.

13029913 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13029913 is a deficient number, since it is larger than the sum of its proper divisors (1148335).

13029913 is a wasteful number, since it uses less digits than its factorization.

13029913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10443.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 13029913 is about 3609.6970787034. The cubic root of 13029913 is about 235.3136779927.

The spelling of 13029913 in words is "thirteen million, twenty-nine thousand, nine hundred thirteen".

Divisors: 1 13 97 1261 10333 134329 1002301 13029913