Base | Representation |
---|---|
bin | 100011100111… |
… | …1110100111101 |
3 | 1022010220002201 |
4 | 1013033310331 |
5 | 14240131203 |
6 | 1504151501 |
7 | 314516023 |
oct | 107176475 |
9 | 38126081 |
10 | 18677053 |
11 | a5a738a |
12 | 6308591 |
13 | 3b3c215 |
14 | 26a2713 |
15 | 198de1d |
hex | 11cfd3d |
18677053 has 4 divisors (see below), whose sum is σ = 18719100. Its totient is φ = 18635008.
The previous prime is 18677051. The next prime is 18677069. The reversal of 18677053 is 35077681.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35077681 = 17 ⋅2063393.
It can be written as a sum of positive squares in 2 ways, for example, as 8773444 + 9903609 = 2962^2 + 3147^2 .
It is a cyclic number.
It is not a de Polignac number, because 18677053 - 21 = 18677051 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (18677051) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20350 + ... + 21247.
It is an arithmetic number, because the mean of its divisors is an integer number (4679775).
Almost surely, 218677053 is an apocalyptic number.
It is an amenable number.
18677053 is a deficient number, since it is larger than the sum of its proper divisors (42047).
18677053 is an equidigital number, since it uses as much as digits as its factorization.
18677053 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 42046.
The product of its (nonzero) digits is 35280, while the sum is 37.
The square root of 18677053 is about 4321.6956163062. The cubic root of 18677053 is about 265.3196711833.
The spelling of 18677053 in words is "eighteen million, six hundred seventy-seven thousand, fifty-three".
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