| Base | Representation |
|---|---|
| bin | 1011111000110111000… |
| … | …1011100010001010100 |
| 3 | 201112011222101011221002 |
| 4 | 2332031301130101110 |
| 5 | 11321241423324340 |
| 6 | 233454423042432 |
| 7 | 20520210310442 |
| oct | 2761561342124 |
| 9 | 645158334832 |
| 10 | 204242011220 |
| 11 | 79689321aa5 |
| 12 | 337002a0418 |
| 13 | 1634c116ca0 |
| 14 | 9c57631b92 |
| 15 | 54a5aa1715 |
| hex | 2f8dc5c454 |
204242011220 has 24 divisors (see below), whose sum is σ = 461901164424. Its totient is φ = 75412434816.
The previous prime is 204242011199. The next prime is 204242011223. The reversal of 204242011220 is 22110242402.
204242011220 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 4 ways, for example, as 14074500496 + 190167510724 = 118636^2 + 436082^2 .
It is a Harshad number since it is a multiple of its sum of digits (20).
It is a junction number, because it is equal to n+sod(n) for n = 204242011192 and 204242011201.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (204242011223) 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 7 ways as a sum of consecutive naturals, for example, 392772839 + ... + 392773358.
It is an arithmetic number, because the mean of its divisors is an integer number (19245881851).
Almost surely, 2204242011220 is an apocalyptic number.
204242011220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
204242011220 is an abundant number, since it is smaller than the sum of its proper divisors (257659153204).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
204242011220 is a wasteful number, since it uses less digits than its factorization.
204242011220 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 785546219 (or 785546217 counting only the distinct ones).
The product of its (nonzero) digits is 512, while the sum is 20.
Adding to 204242011220 its reverse (22110242402), we get a palindrome (226352253622).
The spelling of 204242011220 in words is "two hundred four billion, two hundred forty-two million, eleven thousand, two hundred twenty".
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