| Base | Representation |
|---|---|
| bin | 1111110010001… |
| … | …0100110100100 |
| 3 | 11121120102002200 |
| 4 | 3330202212210 |
| 5 | 113421431040 |
| 6 | 10322534500 |
| 7 | 1432464543 |
| oct | 374424644 |
| 9 | 147512080 |
| 10 | 66202020 |
| 11 | 34407615 |
| 12 | 1a207430 |
| 13 | 1093bbc1 |
| 14 | 8b1415a |
| 15 | 5c2a630 |
| hex | 3f229a4 |
66202020 has 36 divisors (see below), whose sum is σ = 200813340. Its totient is φ = 17653824.
The previous prime is 66202013. The next prime is 66202049. The reversal of 66202020 is 2020266.
66202020 is a `hidden beast` number, since 6 + 620 + 20 + 20 = 666.
66202020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in 2 ways, for example, as 49112064 + 17089956 = 7008^2 + 4134^2 .
It is a tau number, because it is divible by the number of its divisors (36).
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 66201984 and 66202002.
It is an unprimeable number.
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 11 ways as a sum of consecutive naturals, for example, 183715 + ... + 184074.
Almost surely, 266202020 is an apocalyptic number.
66202020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.
It is an amenable number.
66202020 is an abundant number, since it is smaller than the sum of its proper divisors (134611320).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
66202020 is a wasteful number, since it uses less digits than its factorization.
66202020 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 367804 (or 367799 counting only the distinct ones).
The product of its (nonzero) digits is 288, while the sum is 18.
The square root of 66202020 is about 8136.4623762419. The cubic root of 66202020 is about 404.5359110196.
Adding to 66202020 its reverse (2020266), we get a palindrome (68222286).
It can be divided in two parts, 6 and 6202020, that added together give a palindrome (6202026).
The spelling of 66202020 in words is "sixty-six million, two hundred two thousand, twenty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.075 sec. • engine limits •