Base | Representation |
---|---|
bin | 10010101101010010… |
… | …111110111000000101 |
3 | 1220211220210202101120 |
4 | 102231102332320011 |
5 | 312114322204220 |
6 | 13121124344153 |
7 | 1310532156411 |
oct | 225522767005 |
9 | 56756722346 |
10 | 20087303685 |
11 | 8578839629 |
12 | 3a87245059 |
13 | 1b817c4517 |
14 | d87b2dd41 |
15 | 7c8763a40 |
hex | 4ad4bee05 |
20087303685 has 32 divisors (see below), whose sum is σ = 32617159680. Its totient is φ = 10555066368.
The previous prime is 20087303641. The next prime is 20087303699. The reversal of 20087303685 is 58630378002.
It is not a de Polignac number, because 20087303685 - 219 = 20086779397 is a prime.
It is a Curzon number.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 293511 + ... + 355419.
It is an arithmetic number, because the mean of its divisors is an integer number (1019286240).
Almost surely, 220087303685 is an apocalyptic number.
It is an amenable number.
20087303685 is a deficient number, since it is larger than the sum of its proper divisors (12529855995).
20087303685 is a wasteful number, since it uses less digits than its factorization.
20087303685 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 62237.
The product of its (nonzero) digits is 241920, while the sum is 42.
The spelling of 20087303685 in words is "twenty billion, eighty-seven million, three hundred three thousand, six hundred eighty-five".
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