Base | Representation |
---|---|
bin | 10010110100111101… |
… | …000100001000010000 |
3 | 1221011212112210221120 |
4 | 102310331010020100 |
5 | 312400214311020 |
6 | 13141554122240 |
7 | 1313652154515 |
oct | 226475041020 |
9 | 57155483846 |
10 | 20215775760 |
11 | 86343075a4 |
12 | 3b02280380 |
13 | 1ba22c66bb |
14 | d9ac1330c |
15 | 7d4b8e740 |
hex | 4b4f44210 |
20215775760 has 320 divisors, whose sum is σ = 69048080640. Its totient is φ = 4871946240.
The previous prime is 20215775737. The next prime is 20215775761. The reversal of 20215775760 is 6757751202.
It is not an unprimeable number, because it can be changed into a prime (20215775761) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10700896 + ... + 10702784.
It is an arithmetic number, because the mean of its divisors is an integer number (215775252).
Almost surely, 220215775760 is an apocalyptic number.
20215775760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 20215775760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34524040320).
20215775760 is an abundant number, since it is smaller than the sum of its proper divisors (48832304880).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20215775760 is a wasteful number, since it uses less digits than its factorization.
20215775760 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2026 (or 2020 counting only the distinct ones).
The product of its (nonzero) digits is 205800, while the sum is 42.
The spelling of 20215775760 in words is "twenty billion, two hundred fifteen million, seven hundred seventy-five thousand, seven hundred sixty".
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