Base | Representation |
---|---|
bin | 101000100110… |
… | …0001111111010 |
3 | 1111001022221011 |
4 | 1101030033322 |
5 | 20422040314 |
6 | 2040104134 |
7 | 345623665 |
oct | 121141772 |
9 | 44038834 |
10 | 21283834 |
11 | 11017950 |
12 | 716504a |
13 | 45428b0 |
14 | 2b806dc |
15 | 1d064c4 |
hex | 144c3fa |
21283834 has 16 divisors (see below), whose sum is σ = 37507680. Its totient is φ = 8930160.
The previous prime is 21283777. The next prime is 21283841. The reversal of 21283834 is 43838212.
It is a junction number, because it is equal to n+sod(n) for n = 21283796 and 21283805.
It is an unprimeable number.
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, 36924 + ... + 37495.
It is an arithmetic number, because the mean of its divisors is an integer number (2344230).
Almost surely, 221283834 is an apocalyptic number.
21283834 is a deficient number, since it is larger than the sum of its proper divisors (16223846).
21283834 is a wasteful number, since it uses less digits than its factorization.
21283834 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 74445.
The product of its digits is 9216, while the sum is 31.
The square root of 21283834 is about 4613.4405816050. The cubic root of 21283834 is about 277.1298378663.
The spelling of 21283834 in words is "twenty-one million, two hundred eighty-three thousand, eight hundred thirty-four".
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