Base | Representation |
---|---|
bin | 1000001100111… |
… | …01011101100101 |
3 | 11210110112011020 |
4 | 10012131131211 |
5 | 120103134110 |
6 | 10454401353 |
7 | 1463545050 |
oct | 406353545 |
9 | 153415136 |
10 | 68802405 |
11 | 359232a1 |
12 | 1b060259 |
13 | 1133c6a9 |
14 | 91cda97 |
15 | 6090d70 |
hex | 419d765 |
68802405 has 16 divisors (see below), whose sum is σ = 125810304. Its totient is φ = 31452480.
The previous prime is 68802373. The next prime is 68802421. The reversal of 68802405 is 50420886.
It is not a de Polignac number, because 68802405 - 25 = 68802373 is a prime.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 327526 + ... + 327735.
It is an arithmetic number, because the mean of its divisors is an integer number (7863144).
Almost surely, 268802405 is an apocalyptic number.
It is an amenable number.
68802405 is a deficient number, since it is larger than the sum of its proper divisors (57007899).
68802405 is a wasteful number, since it uses less digits than its factorization.
68802405 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 655276.
The product of its (nonzero) digits is 15360, while the sum is 33.
The square root of 68802405 is about 8294.7215143126. The cubic root of 68802405 is about 409.7646974246.
The spelling of 68802405 in words is "sixty-eight million, eight hundred two thousand, four hundred five".
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