Base | Representation |
---|---|
bin | 1000001100110… |
… | …01011010100110 |
3 | 11210102200102100 |
4 | 10012121122212 |
5 | 120102121310 |
6 | 10454152530 |
7 | 1463445531 |
oct | 406313246 |
9 | 153380370 |
10 | 68785830 |
11 | 359118a3 |
12 | 1b052746 |
13 | 11334c99 |
14 | 91c7a18 |
15 | 608aec0 |
hex | 41996a6 |
68785830 has 48 divisors (see below), whose sum is σ = 179481744. Its totient is φ = 18277440.
The previous prime is 68785817. The next prime is 68785877. The reversal of 68785830 is 3858786.
68785830 is a `hidden beast` number, since 68 + 7 + 8 + 583 + 0 = 666.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27325 + ... + 29735.
It is an arithmetic number, because the mean of its divisors is an integer number (3739203).
Almost surely, 268785830 is an apocalyptic number.
68785830 is an abundant number, since it is smaller than the sum of its proper divisors (110695914).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68785830 is a wasteful number, since it uses less digits than its factorization.
68785830 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2741 (or 2738 counting only the distinct ones).
The product of its (nonzero) digits is 322560, while the sum is 45.
The square root of 68785830 is about 8293.7223247466. The cubic root of 68785830 is about 409.7317896829.
The spelling of 68785830 in words is "sixty-eight million, seven hundred eighty-five thousand, eight hundred thirty".
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