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13189115 = 56183521
BaseRepresentation
bin110010010011…
…111111111011
3220211002001202
4302103333323
511334022430
61150404415
7220051142
oct62237773
926732052
1013189115
1174991a5
12450070b
13296a314
141a74759
151257d45
hexc93ffb

13189115 has 16 divisors (see below), whose sum is σ = 16311456. Its totient is φ = 10233600.

The previous prime is 13189091. The next prime is 13189133. The reversal of 13189115 is 51198131.

It is not a de Polignac number, because 13189115 - 220 = 12140539 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25055 + ... + 25575.

It is an arithmetic number, because the mean of its divisors is an integer number (1019466).

Almost surely, 213189115 is an apocalyptic number.

13189115 is a deficient number, since it is larger than the sum of its proper divisors (3122341).

13189115 is an equidigital number, since it uses as much as digits as its factorization.

13189115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670.

The product of its digits is 1080, while the sum is 29.

The square root of 13189115 is about 3631.6821171463. The cubic root of 13189115 is about 236.2681704528.

The spelling of 13189115 in words is "thirteen million, one hundred eighty-nine thousand, one hundred fifteen".

Divisors: 1 5 61 83 305 415 521 2605 5063 25315 31781 43243 158905 216215 2637823 13189115