Base | Representation |
---|---|
bin | 1000001000000… |
… | …10101011101110 |
3 | 11202021022111200 |
4 | 10010002223232 |
5 | 114422342210 |
6 | 10433030330 |
7 | 1455264531 |
oct | 404025356 |
9 | 152238450 |
10 | 68168430 |
11 | 3552aa50 |
12 | 1a9b53a6 |
13 | 11179c65 |
14 | 90a6a18 |
15 | 5eb80c0 |
hex | 4102aee |
68168430 has 96 divisors (see below), whose sum is σ = 198682848. Its totient is φ = 16070400.
The previous prime is 68168417. The next prime is 68168431. The reversal of 68168430 is 3486186.
It is a happy number.
68168430 is a `hidden beast` number, since 68 + 168 + 430 = 666.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68168431) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35700 + ... + 37560.
It is an arithmetic number, because the mean of its divisors is an integer number (2069613).
Almost surely, 268168430 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 68168430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99341424).
68168430 is an abundant number, since it is smaller than the sum of its proper divisors (130514418).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68168430 is a wasteful number, since it uses less digits than its factorization.
68168430 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1922 (or 1919 counting only the distinct ones).
The product of its (nonzero) digits is 27648, while the sum is 36.
The square root of 68168430 is about 8256.4175039783. The cubic root of 68168430 is about 408.5022289884.
The spelling of 68168430 in words is "sixty-eight million, one hundred sixty-eight thousand, four hundred thirty".
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