| Base | Representation |
|---|---|
| bin | 11000010110000… |
| … | …01001110110100 |
| 3 | 112020021012121200 |
| 4 | 30023001032310 |
| 5 | 404234341340 |
| 6 | 32133012500 |
| 7 | 5026541436 |
| oct | 1413011664 |
| 9 | 466235550 |
| 10 | 204215220 |
| 11 | a5301a10 |
| 12 | 58484130 |
| 13 | 33401b11 |
| 14 | 1d19c656 |
| 15 | 12ddd330 |
| hex | c2c13b4 |
204215220 has 144 divisors (see below), whose sum is σ = 715635648. Its totient is φ = 46586880.
The previous prime is 204215189. The next prime is 204215227. The reversal of 204215220 is 22512402.
204215220 is a `hidden beast` number, since 20 + 421 + 5 + 220 = 666.
204215220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
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 = 204215193 and 204215202.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (204215227) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30627 + ... + 36693.
It is an arithmetic number, because the mean of its divisors is an integer number (4969692).
Almost surely, 2204215220 is an apocalyptic number.
204215220 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 204215220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (357817824).
204215220 is an abundant number, since it is smaller than the sum of its proper divisors (511420428).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
204215220 is a wasteful number, since it uses less digits than its factorization.
204215220 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6110 (or 6105 counting only the distinct ones).
The product of its (nonzero) digits is 320, while the sum is 18.
The square root of 204215220 is about 14290.3890779782. The cubic root of 204215220 is about 588.8834768433.
Adding to 204215220 its reverse (22512402), we get a palindrome (226727622).
The spelling of 204215220 in words is "two hundred four million, two hundred fifteen thousand, two hundred twenty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.076 sec. • engine limits •