Base | Representation |
---|---|
bin | 100010101000… |
… | …0001101000000 |
3 | 1021011100000122 |
4 | 1011100031000 |
5 | 14121414204 |
6 | 1445035412 |
7 | 310211000 |
oct | 105201500 |
9 | 37140018 |
10 | 18154304 |
11 | a27a663 |
12 | 60b5b68 |
13 | 39b82bc |
14 | 25a8000 |
15 | 18d90be |
hex | 1150340 |
18154304 has 56 divisors (see below), whose sum is σ = 42062400. Its totient is φ = 7771008.
The previous prime is 18154247. The next prime is 18154307. The reversal of 18154304 is 40345181.
It is a tau number, because it is divible by the number of its divisors (56).
It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (18154307) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21539 + ... + 22365.
Almost surely, 218154304 is an apocalyptic number.
18154304 is a gapful number since it is divisible by the number (14) 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 18154304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21031200).
18154304 is an abundant number, since it is smaller than the sum of its proper divisors (23908096).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18154304 is an frugal number, since it uses more digits than its factorization.
18154304 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 860 (or 836 counting only the distinct ones).
The product of its (nonzero) digits is 1920, while the sum is 26.
The square root of 18154304 is about 4260.7867818045. The cubic root of 18154304 is about 262.8208816665.
Adding to 18154304 its reverse (40345181), we get a palindrome (58499485).
The spelling of 18154304 in words is "eighteen million, one hundred fifty-four thousand, three hundred four".
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