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13129361 = 71998717
BaseRepresentation
bin110010000101…
…011010010001
3220201001002122
4302011122101
511330114421
61145224025
7216412010
oct62053221
926631078
1013129361
117458313
124492015
13294906b
141a5aa77
1512452ab
hexc85691

13129361 has 8 divisors (see below), whose sum is σ = 15794880. Its totient is φ = 10661328.

The previous prime is 13129351. The next prime is 13129367. The reversal of 13129361 is 16392131.

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 13129361 - 210 = 13128337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13129361.

It is not an unprimeable number, because it can be changed into a prime (13129367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49226 + ... + 49491.

It is an arithmetic number, because the mean of its divisors is an integer number (1974360).

Almost surely, 213129361 is an apocalyptic number.

It is an amenable number.

13129361 is a deficient number, since it is larger than the sum of its proper divisors (2665519).

13129361 is an equidigital number, since it uses as much as digits as its factorization.

13129361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98743.

The product of its digits is 972, while the sum is 26.

The square root of 13129361 is about 3623.4460117408. The cubic root of 13129361 is about 235.9108216637.

It can be divided in two parts, 131 and 29361, that added together give a palindrome (29492).

The spelling of 13129361 in words is "thirteen million, one hundred twenty-nine thousand, three hundred sixty-one".

Divisors: 1 7 19 133 98717 691019 1875623 13129361