Base | Representation |
---|---|
bin | 10010101101001110… |
… | …000000110011110111 |
3 | 1220211211100120021210 |
4 | 102231032000303313 |
5 | 312114004012022 |
6 | 13121040412503 |
7 | 1310515122231 |
oct | 225516006367 |
9 | 56754316253 |
10 | 20086000887 |
11 | 8578029837 |
12 | 3a86917133 |
13 | 1b81459534 |
14 | d878b1251 |
15 | 7c85a7a0c |
hex | 4ad380cf7 |
20086000887 has 32 divisors (see below), whose sum is σ = 27948994560. Its totient is φ = 12821447520.
The previous prime is 20086000861. The next prime is 20086000931. The reversal of 20086000887 is 78800068002.
It is not a de Polignac number, because 20086000887 - 211 = 20085998839 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20086000807) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1749588 + ... + 1761030.
It is an arithmetic number, because the mean of its divisors is an integer number (873406080).
Almost surely, 220086000887 is an apocalyptic number.
20086000887 is a deficient number, since it is larger than the sum of its proper divisors (7862993673).
20086000887 is a wasteful number, since it uses less digits than its factorization.
20086000887 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 11763.
The product of its (nonzero) digits is 43008, while the sum is 39.
Adding to 20086000887 its reverse (78800068002), we get a palindrome (98886068889).
The spelling of 20086000887 in words is "twenty billion, eighty-six million, eight hundred eighty-seven", and thus it is an aban number.
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