Base | Representation |
---|---|
bin | 10001000011000011… |
… | …111111001111011000 |
3 | 1202020201001202001222 |
4 | 101003003333033120 |
5 | 244442034104440 |
6 | 12224215231212 |
7 | 1215420555206 |
oct | 210303771730 |
9 | 52221052058 |
10 | 18304988120 |
11 | 7843763561 |
12 | 366a378508 |
13 | 1959486923 |
14 | c5913c076 |
15 | 7220502b5 |
hex | 4430ff3d8 |
18304988120 has 32 divisors (see below), whose sum is σ = 41190696720. Its totient is φ = 7321200000.
The previous prime is 18304988099. The next prime is 18304988161. The reversal of 18304988120 is 2188940381.
It is a super-2 number, since 2×183049881202 (a number of 21 digits) contains 22 as substring.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469370 + ... + 506870.
Almost surely, 218304988120 is an apocalyptic number.
18304988120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
18304988120 is an abundant number, since it is smaller than the sum of its proper divisors (22885708600).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18304988120 is a wasteful number, since it uses less digits than its factorization.
18304988120 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 49715 (or 49711 counting only the distinct ones).
The product of its (nonzero) digits is 110592, while the sum is 44.
The spelling of 18304988120 in words is "eighteen billion, three hundred four million, nine hundred eighty-eight thousand, one hundred twenty".
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