Base | Representation |
---|---|
bin | 110011000101… |
… | …0100001001000 |
3 | 1212101122200100 |
4 | 1212022201020 |
5 | 23324004033 |
6 | 2354005400 |
7 | 443432646 |
oct | 146124110 |
9 | 55348610 |
10 | 26781768 |
11 | 141325a2 |
12 | 8b76860 |
13 | 5719200 |
14 | 37b2196 |
15 | 2540513 |
hex | 198a848 |
26781768 has 144 divisors (see below), whose sum is σ = 82218240. Its totient is φ = 7862400.
The previous prime is 26781763. The next prime is 26781787. The reversal of 26781768 is 86718762.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (26781763) by changing a digit.
It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 377173 + ... + 377243.
It is an arithmetic number, because the mean of its divisors is an integer number (570960).
Almost surely, 226781768 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 26781768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41109120).
26781768 is an abundant number, since it is smaller than the sum of its proper divisors (55436472).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
26781768 is a wasteful number, since it uses less digits than its factorization.
26781768 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 140 (or 120 counting only the distinct ones).
The product of its digits is 225792, while the sum is 45.
The square root of 26781768 is about 5175.1104336043. The cubic root of 26781768 is about 299.1895458519.
The spelling of 26781768 in words is "twenty-six million, seven hundred eighty-one thousand, seven hundred sixty-eight".
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