| Base | Representation |
|---|---|
| bin | 11101000010000… |
| … | …00011101001000 |
| 3 | 121222020210100110 |
| 4 | 32201000131020 |
| 5 | 444321034030 |
| 6 | 40055434320 |
| 7 | 6015000420 |
| oct | 1641003510 |
| 9 | 558223313 |
| 10 | 243533640 |
| 11 | 115517479 |
| 12 | 696859a0 |
| 13 | 3b5ba35c |
| 14 | 244b5480 |
| 15 | 165a81b0 |
| hex | e840748 |
243533640 has 128 divisors (see below), whose sum is σ = 878976000. Its totient is φ = 52731648.
The previous prime is 243533629. The next prime is 243533663. The reversal of 243533640 is 46335342.
243533640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a super-3 number, since 3×2435336403 (a number of 26 digits) contains 333 as substring.
It is a Harshad number since it is a multiple of its sum of digits (30).
It is a junction number, because it is equal to n+sod(n) for n = 243533598 and 243533607.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8331 + ... + 23589.
It is an arithmetic number, because the mean of its divisors is an integer number (6867000).
Almost surely, 2243533640 is an apocalyptic number.
243533640 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 243533640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (439488000).
243533640 is an abundant number, since it is smaller than the sum of its proper divisors (635442360).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
243533640 is a wasteful number, since it uses less digits than its factorization.
243533640 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 15299 (or 15295 counting only the distinct ones).
The product of its (nonzero) digits is 25920, while the sum is 30.
The square root of 243533640 is about 15605.5643922288. The cubic root of 243533640 is about 624.4816096198.
Adding to 243533640 its reverse (46335342), we get a palindrome (289868982).
The spelling of 243533640 in words is "two hundred forty-three million, five hundred thirty-three thousand, six hundred forty".
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