| Base | Representation |
|---|---|
| bin | 10000110000110… |
| … | …010010010001000 |
| 3 | 201121011200020212 |
| 4 | 100300302102020 |
| 5 | 1033443134303 |
| 6 | 43523340252 |
| 7 | 6653240000 |
| oct | 2060622210 |
| 9 | 647150225 |
| 10 | 281224328 |
| 11 | 134820000 |
| 12 | 7a221688 |
| 13 | 46355a38 |
| 14 | 294c7000 |
| 15 | 19a50ad8 |
| hex | 10c32488 |
281224328 has 100 divisors (see below), whose sum is σ = 676651575. Its totient is φ = 109567920.
The previous prime is 281224313. The next prime is 281224351. The reversal of 281224328 is 823422182.
It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.
281224328 is digitally balanced in base 3, 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 only one way, i.e., 140612164 + 140612164 = 11858^2 + 11858^2 .
It is an ABA number since it can be written as A⋅BA, here for A=2, B=11858.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 281224294 and 281224303.
It is an unprimeable number.
It is a polite number, since it can be written in 24 ways as a sum of consecutive naturals, for example, 25565843 + ... + 25565853.
Almost surely, 2281224328 is an apocalyptic number.
281224328 is a gapful number since it is divisible by the number (28) 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 281224328
281224328 is an abundant number, since it is smaller than the sum of its proper divisors (395427247).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
281224328 is an frugal number, since it uses more digits than its factorization.
281224328 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 78 (or 20 counting only the distinct ones).
The product of its digits is 12288, while the sum is 32.
The square root of 281224328 is about 16769.7444226202. The cubic root of 281224328 is about 655.1654132277.
Multiplying 281224328 by its sum of digits (32), we get a 4-th power (8999178496 = 3084).
The spelling of 281224328 in words is "two hundred eighty-one million, two hundred twenty-four thousand, three hundred twenty-eight".
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