Base | Representation |
---|---|
bin | 111100001101000… |
… | …0100011111110111 |
3 | 12012210011201100202 |
4 | 1320122010133313 |
5 | 13114121200322 |
6 | 532241431115 |
7 | 101026365425 |
oct | 17032043767 |
9 | 5183151322 |
10 | 2020100087 |
11 | 947326105 |
12 | 48463b49b |
13 | 2626941c5 |
14 | 15240c115 |
15 | bc533292 |
hex | 786847f7 |
2020100087 has 2 divisors, whose sum is σ = 2020100088. Its totient is φ = 2020100086.
The previous prime is 2020100077. The next prime is 2020100111. The reversal of 2020100087 is 7800010202.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 2020100087 - 210 = 2020099063 is a prime.
It is a super-2 number, since 2×20201000872 = 8161608722994815138, which contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (2020100077) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010050043 + 1010050044.
It is an arithmetic number, because the mean of its divisors is an integer number (1010050044).
Almost surely, 22020100087 is an apocalyptic number.
2020100087 is a deficient number, since it is larger than the sum of its proper divisors (1).
2020100087 is an equidigital number, since it uses as much as digits as its factorization.
2020100087 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 224, while the sum is 20.
The square root of 2020100087 is about 44945.5235479575. The cubic root of 2020100087 is about 1264.1277425158.
Adding to 2020100087 its reverse (7800010202), we get a palindrome (9820110289).
The spelling of 2020100087 in words is "two billion, twenty million, one hundred thousand, eighty-seven".
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