Base | Representation |
---|---|
bin | 100100001010… |
… | …0111010001100 |
3 | 1022200021020200 |
4 | 1020110322030 |
5 | 14323210022 |
6 | 1514213500 |
7 | 320105001 |
oct | 110247214 |
9 | 38607220 |
10 | 18960012 |
11 | a77aa35 |
12 | 6424290 |
13 | 3c0ac56 |
14 | 27378a8 |
15 | 19e7bac |
hex | 1214e8c |
18960012 has 18 divisors (see below), whose sum is σ = 47926788. Its totient is φ = 6319992.
The previous prime is 18959987. The next prime is 18960031. The reversal of 18960012 is 21006981.
It is a tau number, because it is divible by the number of its divisors (18).
It is an unprimeable number.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 263298 + ... + 263369.
Almost surely, 218960012 is an apocalyptic number.
18960012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
18960012 is an abundant number, since it is smaller than the sum of its proper divisors (28966776).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18960012 is a wasteful number, since it uses less digits than its factorization.
18960012 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 526677 (or 526672 counting only the distinct ones).
The product of its (nonzero) digits is 864, while the sum is 27.
The square root of 18960012 is about 4354.3095893609. The cubic root of 18960012 is about 266.6528333102.
Adding to 18960012 its reverse (21006981), we get a palindrome (39966993).
The spelling of 18960012 in words is "eighteen million, nine hundred sixty thousand, twelve".
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