Base | Representation |
---|---|
bin | 100100001010… |
… | …1000111010001 |
3 | 1022200022101200 |
4 | 1020111013101 |
5 | 14323221344 |
6 | 1514221413 |
7 | 320110305 |
oct | 110250721 |
9 | 38608350 |
10 | 18960849 |
11 | a780626 |
12 | 6424869 |
13 | 3c0b44b |
14 | 2737d05 |
15 | 19e8069 |
hex | 12151d1 |
18960849 has 12 divisors (see below), whose sum is σ = 27456000. Its totient is φ = 12609144.
The previous prime is 18960847. The next prime is 18960857. The reversal of 18960849 is 94806981.
It is not a de Polignac number, because 18960849 - 21 = 18960847 is a prime.
It is not an unprimeable number, because it can be changed into a prime (18960847) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1552 + ... + 6350.
It is an arithmetic number, because the mean of its divisors is an integer number (2288000).
Almost surely, 218960849 is an apocalyptic number.
It is an amenable number.
18960849 is a deficient number, since it is larger than the sum of its proper divisors (8495151).
18960849 is a wasteful number, since it uses less digits than its factorization.
18960849 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5244 (or 5241 counting only the distinct ones).
The product of its (nonzero) digits is 124416, while the sum is 45.
The square root of 18960849 is about 4354.4056999779. The cubic root of 18960849 is about 266.6567570970.
The spelling of 18960849 in words is "eighteen million, nine hundred sixty thousand, eight hundred forty-nine".
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