Base | Representation |
---|---|
bin | 1000001000100… |
… | …00101011110100 |
3 | 11202101020011202 |
4 | 10010100223310 |
5 | 114431211110 |
6 | 10434152032 |
7 | 1455623660 |
oct | 404205364 |
9 | 152336152 |
10 | 68225780 |
11 | 3556a047 |
12 | 1aa22618 |
13 | 1119a0ac |
14 | 90bd8a0 |
15 | 5eca0a5 |
hex | 4110af4 |
68225780 has 48 divisors (see below), whose sum is σ = 168180096. Its totient is φ = 22757760.
The previous prime is 68225779. The next prime is 68225783. The reversal of 68225780 is 8752286.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68225783) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1406 + ... + 11765.
It is an arithmetic number, because the mean of its divisors is an integer number (3503752).
Almost surely, 268225780 is an apocalyptic number.
It is an amenable number.
68225780 is an abundant number, since it is smaller than the sum of its proper divisors (99954316).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68225780 is a wasteful number, since it uses less digits than its factorization.
68225780 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 13224 (or 13222 counting only the distinct ones).
The product of its (nonzero) digits is 53760, while the sum is 38.
The square root of 68225780 is about 8259.8898297738. The cubic root of 68225780 is about 408.6167543194.
It can be divided in two parts, 682 and 25780, that added together give a palindrome (26462).
The spelling of 68225780 in words is "sixty-eight million, two hundred twenty-five thousand, seven hundred eighty".
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