Base | Representation |
---|---|
bin | 100010111110… |
… | …0001010100000 |
3 | 1021111111000200 |
4 | 1011330022200 |
5 | 14143144433 |
6 | 1452545200 |
7 | 311560653 |
oct | 105741240 |
9 | 37444020 |
10 | 18334368 |
11 | a392978 |
12 | 6182200 |
13 | 3a4c250 |
14 | 261389a |
15 | 1922613 |
hex | 117c2a0 |
18334368 has 144 divisors (see below), whose sum is σ = 57788640. Its totient is φ = 5478912.
The previous prime is 18334357. The next prime is 18334397. The reversal of 18334368 is 86343381.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (144).
It is a super-2 number, since 2×183343682 = 672298099918848, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a nude number because it is divisible by every one of its digits.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 220855 + ... + 220937.
It is an arithmetic number, because the mean of its divisors is an integer number (401310).
Almost surely, 218334368 is an apocalyptic number.
18334368 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 18334368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28894320).
18334368 is an abundant number, since it is smaller than the sum of its proper divisors (39454272).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18334368 is a wasteful number, since it uses less digits than its factorization.
18334368 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 171 (or 160 counting only the distinct ones).
The product of its digits is 41472, while the sum is 36.
The square root of 18334368 is about 4281.8650142199. The cubic root of 18334368 is about 263.6869567732.
The spelling of 18334368 in words is "eighteen million, three hundred thirty-four thousand, three hundred sixty-eight".
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