Base | Representation |
---|---|
bin | 10000110001011010… |
… | …010011000101111000 |
3 | 1201111001211012102200 |
4 | 100301122103011320 |
5 | 243340231043322 |
6 | 12135000030200 |
7 | 1205163446163 |
oct | 206132230570 |
9 | 51431735380 |
10 | 18008846712 |
11 | 770158509a |
12 | 35a7162360 |
13 | 191000a21c |
14 | c2ba90ada |
15 | 7060548ac |
hex | 431693178 |
18008846712 has 24 divisors (see below), whose sum is σ = 48773960040. Its totient is φ = 6002948880.
The previous prime is 18008846711. The next prime is 18008846749. The reversal of 18008846712 is 21764880081.
18008846712 is a `hidden beast` number, since 180 + 0 + 8 + 8 + 467 + 1 + 2 = 666.
It is a tau number, because it is divible by the number of its divisors (24).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (18008846711) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 125061364 + ... + 125061507.
It is an arithmetic number, because the mean of its divisors is an integer number (2032248335).
Almost surely, 218008846712 is an apocalyptic number.
18008846712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
18008846712 is an abundant number, since it is smaller than the sum of its proper divisors (30765113328).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18008846712 is a wasteful number, since it uses less digits than its factorization.
18008846712 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 250122883 (or 250122876 counting only the distinct ones).
The product of its (nonzero) digits is 172032, while the sum is 45.
The spelling of 18008846712 in words is "eighteen billion, eight million, eight hundred forty-six thousand, seven hundred twelve".
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