Base | Representation |
---|---|
bin | 1000001000010… |
… | …10110111111110 |
3 | 11202100000112100 |
4 | 10010022313332 |
5 | 114424430412 |
6 | 10433445530 |
7 | 1455464412 |
oct | 404126776 |
9 | 152300470 |
10 | 68201982 |
11 | 35553182 |
12 | 1aa108a6 |
13 | 1118c304 |
14 | 90b4d42 |
15 | 5ec2edc |
hex | 410adfe |
68201982 has 48 divisors (see below), whose sum is σ = 158895360. Its totient is φ = 21074256.
The previous prime is 68201981. The next prime is 68202041. The reversal of 68201982 is 28910286.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68201981) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13953 + ... + 18195.
It is an arithmetic number, because the mean of its divisors is an integer number (3310320).
Almost surely, 268201982 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 68201982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79447680).
68201982 is an abundant number, since it is smaller than the sum of its proper divisors (90693378).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68201982 is a wasteful number, since it uses less digits than its factorization.
68201982 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4317 (or 4314 counting only the distinct ones).
The product of its (nonzero) digits is 13824, while the sum is 36.
The square root of 68201982 is about 8258.4491280143. The cubic root of 68201982 is about 408.5692385935.
The spelling of 68201982 in words is "sixty-eight million, two hundred one thousand, nine hundred eighty-two".
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