Base | Representation |
---|---|
bin | 110001000000011… |
… | …1111000000001010 |
3 | 11020121021110100000 |
4 | 1202000333000022 |
5 | 11331433101401 |
6 | 431101423430 |
7 | 55515245433 |
oct | 14200770012 |
9 | 4217243300 |
10 | 1644425226 |
11 | 774265014 |
12 | 39a86ab76 |
13 | 2028bb8a2 |
14 | 11857a48a |
15 | 99577186 |
hex | 6203f00a |
1644425226 has 48 divisors (see below), whose sum is σ = 3757572000. Its totient is φ = 538841808.
The previous prime is 1644425219. The next prime is 1644425231. The reversal of 1644425226 is 6225244461.
1644425226 is a `hidden beast` number, since 1 + 6 + 4 + 4 + 425 + 226 = 666.
1644425226 is a nontrivial binomial coefficient, being equal to C(57349, 2).
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1 + ... + 57348.
It is an arithmetic number, because the mean of its divisors is an integer number (78282750).
Almost surely, 21644425226 is an apocalyptic number.
1644425226 is the 57348-th triangular number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1644425226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1878786000).
1644425226 is an abundant number, since it is smaller than the sum of its proper divisors (2113146774).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1644425226 is an equidigital number, since it uses as much as digits as its factorization.
With its predecessor (1644425225) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (57425).
1644425226 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 57425 (or 57413 counting only the distinct ones).
The product of its digits is 92160, while the sum is 36.
The square root of 1644425226 is about 40551.5132393355. The cubic root of 1644425226 is about 1180.3334368441. Note that the first 3 decimals are identical.
Adding to 1644425226 its reverse (6225244461), we get a palindrome (7869669687).
The spelling of 1644425226 in words is "one billion, six hundred forty-four million, four hundred twenty-five thousand, two hundred twenty-six".
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