Base | Representation |
---|---|
bin | 100010101100… |
… | …0111110101000 |
3 | 1021020011022220 |
4 | 1011120332220 |
5 | 14124041443 |
6 | 1445514040 |
7 | 310420536 |
oct | 105307650 |
9 | 37204286 |
10 | 18190248 |
11 | a2a466a |
12 | 6112920 |
13 | 39cb77b |
14 | 25b7156 |
15 | 18e4a83 |
hex | 1158fa8 |
18190248 has 16 divisors (see below), whose sum is σ = 45475680. Its totient is φ = 6063408.
The previous prime is 18190241. The next prime is 18190259. The reversal of 18190248 is 84209181.
It is not an unprimeable number, because it can be changed into a prime (18190241) 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, 378940 + ... + 378987.
It is an arithmetic number, because the mean of its divisors is an integer number (2842230).
Almost surely, 218190248 is an apocalyptic number.
It is an amenable number.
18190248 is an abundant number, since it is smaller than the sum of its proper divisors (27285432).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18190248 is a wasteful number, since it uses less digits than its factorization.
18190248 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 757936 (or 757932 counting only the distinct ones).
The product of its (nonzero) digits is 4608, while the sum is 33.
The square root of 18190248 is about 4265.0026963649. The cubic root of 18190248 is about 262.9942217547.
The spelling of 18190248 in words is "eighteen million, one hundred ninety thousand, two hundred forty-eight".
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