Base | Representation |
---|---|
bin | 1000001100100… |
… | …10101010100100 |
3 | 11210101021111021 |
4 | 10012102222210 |
5 | 120100230210 |
6 | 10453420524 |
7 | 1463302111 |
oct | 406225244 |
9 | 153337437 |
10 | 68758180 |
11 | 358a3047 |
12 | 1b03a744 |
13 | 1132551a |
14 | 91bb908 |
15 | 6082bda |
hex | 4192aa4 |
68758180 has 48 divisors (see below), whose sum is σ = 148619520. Its totient is φ = 26707968.
The previous prime is 68758153. The next prime is 68758199. The reversal of 68758180 is 8185786.
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, 181231 + ... + 181609.
It is an arithmetic number, because the mean of its divisors is an integer number (3096240).
Almost surely, 268758180 is an apocalyptic number.
It is an amenable number.
68758180 is an abundant number, since it is smaller than the sum of its proper divisors (79861340).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68758180 is a wasteful number, since it uses less digits than its factorization.
68758180 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 628 (or 626 counting only the distinct ones).
The product of its (nonzero) digits is 107520, while the sum is 43.
The square root of 68758180 is about 8292.0552337765. The cubic root of 68758180 is about 409.6768820451.
The spelling of 68758180 in words is "sixty-eight million, seven hundred fifty-eight thousand, one hundred eighty".
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