| Base | Representation |
|---|---|
| bin | 10010101110101010… |
| … | …011001101011110100 |
| 3 | 1220220111221000200201 |
| 4 | 102232222121223310 |
| 5 | 312141204020040 |
| 6 | 13123303450244 |
| 7 | 1311231023032 |
| oct | 225652315364 |
| 9 | 56814830621 |
| 10 | 20110220020 |
| 11 | 858a770a50 |
| 12 | 3a92a56984 |
| 13 | 1b86489197 |
| 14 | d8abb7552 |
| 15 | 7ca78da9a |
| hex | 4aea99af4 |
20110220020 has 96 divisors (see below), whose sum is σ = 47518410240. Its totient is φ = 7084707840.
The previous prime is 20110219991. The next prime is 20110220021. The reversal of 20110220020 is 2002201102.
It is a Harshad number since it is a multiple of its sum of digits (10).
It is a junction number, because it is equal to n+sod(n) for n = 20110219979 and 20110220006.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20110220021) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1940292 + ... + 1950628.
It is an arithmetic number, because the mean of its divisors is an integer number (494983440).
Almost surely, 220110220020 is an apocalyptic number.
20110220020 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 20110220020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23759205120).
20110220020 is an abundant number, since it is smaller than the sum of its proper divisors (27408190220).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20110220020 is a wasteful number, since it uses less digits than its factorization.
20110220020 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 10633 (or 10631 counting only the distinct ones).
The product of its (nonzero) digits is 16, while the sum is 10.
Adding to 20110220020 its reverse (2002201102), we get a palindrome (22112421122).
It can be divided in two parts, 201102 and 20020, that added together give a palindrome (221122).
The spelling of 20110220020 in words is "twenty billion, one hundred ten million, two hundred twenty thousand, twenty".
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