Base | Representation |
---|---|
bin | 10011001011000111… |
… | …000000111100100000 |
3 | 1222010202222111022010 |
4 | 103023013000330200 |
5 | 314130343423122 |
6 | 13242513112520 |
7 | 1326114501033 |
oct | 231307007440 |
9 | 58122874263 |
10 | 20587482912 |
11 | 8805108697 |
12 | 3ba6858740 |
13 | 1c31310069 |
14 | dd433101a |
15 | 807614e0c |
hex | 4cb1c0f20 |
20587482912 has 96 divisors (see below), whose sum is σ = 56067379200. Its totient is φ = 6607560960.
The previous prime is 20587482857. The next prime is 20587482913. The reversal of 20587482912 is 21928478502.
It is a tau number, because it is divible by the number of its divisors (96).
It is a Harshad number since it is a multiple of its sum of digits (48).
It is not an unprimeable number, because it can be changed into a prime (20587482913) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 574843 + ... + 609605.
It is an arithmetic number, because the mean of its divisors is an integer number (584035200).
Almost surely, 220587482912 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 20587482912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28033689600).
20587482912 is an abundant number, since it is smaller than the sum of its proper divisors (35479896288).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20587482912 is a wasteful number, since it uses less digits than its factorization.
20587482912 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 35006 (or 34998 counting only the distinct ones).
The product of its (nonzero) digits is 645120, while the sum is 48.
The spelling of 20587482912 in words is "twenty billion, five hundred eighty-seven million, four hundred eighty-two thousand, nine hundred twelve".
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