Base | Representation |
---|---|
bin | 100010100111… |
… | …1111001000101 |
3 | 1021011021021102 |
4 | 1011033321011 |
5 | 14121344104 |
6 | 1445025445 |
7 | 310204166 |
oct | 105177105 |
9 | 37137242 |
10 | 18153029 |
11 | a279704 |
12 | 60b5285 |
13 | 39b784b |
14 | 25a776d |
15 | 18d8a1e |
hex | 114fe45 |
18153029 has 4 divisors (see below), whose sum is σ = 18329376. Its totient is φ = 17976684.
The previous prime is 18152971. The next prime is 18153041. The reversal of 18153029 is 92035181.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 18153029 - 220 = 17104453 is a prime.
It is a Duffinian number.
It is a Curzon number.
It is a junction number, because it is equal to n+sod(n) for n = 18152992 and 18153010.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (18153329) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88019 + ... + 88224.
It is an arithmetic number, because the mean of its divisors is an integer number (4582344).
Almost surely, 218153029 is an apocalyptic number.
It is an amenable number.
18153029 is a deficient number, since it is larger than the sum of its proper divisors (176347).
18153029 is a wasteful number, since it uses less digits than its factorization.
18153029 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 176346.
The product of its (nonzero) digits is 2160, while the sum is 29.
The square root of 18153029 is about 4260.6371589235. The cubic root of 18153029 is about 262.8147287735.
The spelling of 18153029 in words is "eighteen million, one hundred fifty-three thousand, twenty-nine".
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