Base | Representation |
---|---|
bin | 100010111110… |
… | …1111001100000 |
3 | 1021111211202210 |
4 | 1011331321200 |
5 | 14143411342 |
6 | 1453042120 |
7 | 311620452 |
oct | 105757140 |
9 | 37454683 |
10 | 18341472 |
11 | a398246 |
12 | 6186340 |
13 | 3a52556 |
14 | 26162d2 |
15 | 192479c |
hex | 117de60 |
18341472 has 24 divisors (see below), whose sum is σ = 48146616. Its totient is φ = 6113792.
The previous prime is 18341461. The next prime is 18341497. The reversal of 18341472 is 27414381.
It is a tau number, because it is divible by the number of its divisors (24).
It is an alternating number because its digits alternate between odd and even.
It is a congruent number.
It is an unprimeable number.
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, 95433 + ... + 95624.
It is an arithmetic number, because the mean of its divisors is an integer number (2006109).
Almost surely, 218341472 is an apocalyptic number.
18341472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
18341472 is an abundant number, since it is smaller than the sum of its proper divisors (29805144).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18341472 is a wasteful number, since it uses less digits than its factorization.
18341472 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 191070 (or 191062 counting only the distinct ones).
The product of its digits is 5376, while the sum is 30.
The square root of 18341472 is about 4282.6944789466. The cubic root of 18341472 is about 263.7210092196.
The spelling of 18341472 in words is "eighteen million, three hundred forty-one thousand, four hundred seventy-two".
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