Base | Representation |
---|---|
bin | 11011001110110… |
… | …01000110100000 |
3 | 120220211110101021 |
4 | 31213121012200 |
5 | 431434231430 |
6 | 34400015224 |
7 | 5442424243 |
oct | 1547310640 |
9 | 526743337 |
10 | 228430240 |
11 | 107a41025 |
12 | 64601514 |
13 | 3842c92c |
14 | 224a325a |
15 | 150c307a |
hex | d9d91a0 |
228430240 has 48 divisors (see below), whose sum is σ = 540577800. Its totient is φ = 91217920.
The previous prime is 228430219. The next prime is 228430243. The reversal of 228430240 is 42034822.
It can be written as a sum of positive squares in 4 ways, for example, as 192765456 + 35664784 = 13884^2 + 5972^2 .
It is not an unprimeable number, because it can be changed into a prime (228430243) by changing a digit.
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 7 ways as a sum of consecutive naturals, for example, 167160 + ... + 168520.
Almost surely, 2228430240 is an apocalyptic number.
228430240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
228430240 is an abundant number, since it is smaller than the sum of its proper divisors (312147560).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
228430240 is a wasteful number, since it uses less digits than its factorization.
228430240 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2425 (or 2417 counting only the distinct ones).
The product of its (nonzero) digits is 3072, while the sum is 25.
The square root of 228430240 is about 15113.9088259788. The cubic root of 228430240 is about 611.2954998659.
The spelling of 228430240 in words is "two hundred twenty-eight million, four hundred thirty thousand, two hundred forty".
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