Base | Representation |
---|---|
bin | 1001100111111… |
… | …00011111010000 |
3 | 12121220022012200 |
4 | 10303330133100 |
5 | 131131212333 |
6 | 12002123200 |
7 | 2000105451 |
oct | 463743720 |
9 | 177808180 |
10 | 80725968 |
11 | 41627684 |
12 | 23050500 |
13 | 1395595b |
14 | aa15128 |
15 | 7148c13 |
hex | 4cfc7d0 |
80725968 has 30 divisors (see below), whose sum is σ = 225920994. Its totient is φ = 26908608.
The previous prime is 80725949. The next prime is 80725969. The reversal of 80725968 is 86952708.
It can be written as a sum of positive squares in only one way, i.e., 69355584 + 11370384 = 8328^2 + 3372^2 .
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (80725969) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 280155 + ... + 280442.
Almost surely, 280725968 is an apocalyptic number.
It is an amenable number.
80725968 is an abundant number, since it is smaller than the sum of its proper divisors (145195026).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80725968 is a wasteful number, since it uses less digits than its factorization.
80725968 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 560611 (or 560602 counting only the distinct ones).
The product of its (nonzero) digits is 241920, while the sum is 45.
The square root of 80725968 is about 8984.7631020523. The cubic root of 80725968 is about 432.1863907617.
The spelling of 80725968 in words is "eighty million, seven hundred twenty-five thousand, nine hundred sixty-eight".
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