Base | Representation |
---|---|
bin | 111001101010… |
… | …011101101011 |
3 | 1001102222110000 |
4 | 321222131223 |
5 | 12332204024 |
6 | 1255554043 |
7 | 242325243 |
oct | 71523553 |
9 | 31388400 |
10 | 15116139 |
11 | 8594a85 |
12 | 508b923 |
13 | 319347c |
14 | 2016b23 |
15 | 14d8cc9 |
hex | e6a76b |
15116139 has 10 divisors (see below), whose sum is σ = 22581020. Its totient is φ = 10077372.
The previous prime is 15116137. The next prime is 15116149. The reversal of 15116139 is 93161151.
It is not a de Polignac number, because 15116139 - 21 = 15116137 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (15116137) by changing a digit.
It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 93229 + ... + 93390.
It is an arithmetic number, because the mean of its divisors is an integer number (2258102).
Almost surely, 215116139 is an apocalyptic number.
15116139 is a deficient number, since it is larger than the sum of its proper divisors (7464881).
15116139 is an equidigital number, since it uses as much as digits as its factorization.
15116139 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 186631 (or 186622 counting only the distinct ones).
The product of its digits is 810, while the sum is 27.
The square root of 15116139 is about 3887.9479163178. The cubic root of 15116139 is about 247.2560682039.
It can be divided in two parts, 151 and 16139, that added together give a triangular number (16290 = T180).
The spelling of 15116139 in words is "fifteen million, one hundred sixteen thousand, one hundred thirty-nine".
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