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13129115 = 53317933
BaseRepresentation
bin110010000101…
…010110011011
3220201000202112
4302011112123
511330112430
61145222535
7216411206
oct62052633
926630675
1013129115
11745810a
124491a4b
132948c0c
141a5a93d
151245195
hexc8559b

13129115 has 8 divisors (see below), whose sum is σ = 15804528. Its totient is φ = 10470240.

The previous prime is 13129111. The next prime is 13129201. The reversal of 13129115 is 51192131.

13129115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13129115 - 22 = 13129111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13129111) 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, 2312 + ... + 5621.

It is an arithmetic number, because the mean of its divisors is an integer number (1975566).

Almost surely, 213129115 is an apocalyptic number.

13129115 is a deficient number, since it is larger than the sum of its proper divisors (2675413).

13129115 is an equidigital number, since it uses as much as digits as its factorization.

13129115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8269.

The product of its digits is 270, while the sum is 23.

The square root of 13129115 is about 3623.4120659953. The cubic root of 13129115 is about 235.9093482631.

The spelling of 13129115 in words is "thirteen million, one hundred twenty-nine thousand, one hundred fifteen".

Divisors: 1 5 331 1655 7933 39665 2625823 13129115