Base | Representation |
---|---|
bin | 100011000111… |
… | …1001100001101 |
3 | 1021122102221002 |
4 | 1012033030031 |
5 | 14203143201 |
6 | 1454350045 |
7 | 312334115 |
oct | 106171415 |
9 | 37572832 |
10 | 18412301 |
11 | a436486 |
12 | 61bb325 |
13 | 3a7886b |
14 | 2634045 |
15 | 193a76b |
hex | 118f30d |
18412301 has 4 divisors (see below), whose sum is σ = 18714204. Its totient is φ = 18110400.
The previous prime is 18412291. The next prime is 18412313. The reversal of 18412301 is 10321481.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10321481 = 31 ⋅332951.
It can be written as a sum of positive squares in 2 ways, for example, as 990025 + 17422276 = 995^2 + 4174^2 .
It is a cyclic number.
It is not a de Polignac number, because 18412301 - 26 = 18412237 is a prime.
It is a super-2 number, since 2×184123012 = 678025656229202, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (18412001) 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, 150860 + ... + 150981.
It is an arithmetic number, because the mean of its divisors is an integer number (4678551).
Almost surely, 218412301 is an apocalyptic number.
It is an amenable number.
18412301 is a deficient number, since it is larger than the sum of its proper divisors (301903).
18412301 is an equidigital number, since it uses as much as digits as its factorization.
18412301 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 301902.
The product of its (nonzero) digits is 192, while the sum is 20.
The square root of 18412301 is about 4290.9557210486. The cubic root of 18412301 is about 264.0600423963.
Adding to 18412301 its reverse (10321481), we get a palindrome (28733782).
The spelling of 18412301 in words is "eighteen million, four hundred twelve thousand, three hundred one".
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