Base | Representation |
---|---|
bin | 1000001011100… |
… | …01011100111100 |
3 | 11210010100212202 |
4 | 10011301130330 |
5 | 120031402030 |
6 | 10450451032 |
7 | 1462164356 |
oct | 405613474 |
9 | 153110782 |
10 | 68622140 |
11 | 3580a914 |
12 | 1ab93a78 |
13 | 112a8622 |
14 | 91840d6 |
15 | 6057745 |
hex | 417173c |
68622140 has 24 divisors (see below), whose sum is σ = 144745440. Its totient is φ = 27327168.
The previous prime is 68622131. The next prime is 68622163. The reversal of 68622140 is 4122686.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2912 + ... + 12071.
It is an arithmetic number, because the mean of its divisors is an integer number (6031060).
Almost surely, 268622140 is an apocalyptic number.
It is an amenable number.
68622140 is an abundant number, since it is smaller than the sum of its proper divisors (76123300).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68622140 is a wasteful number, since it uses less digits than its factorization.
68622140 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 15221 (or 15219 counting only the distinct ones).
The product of its (nonzero) digits is 4608, while the sum is 29.
The square root of 68622140 is about 8283.8481396028. The cubic root of 68622140 is about 409.4065179005.
The spelling of 68622140 in words is "sixty-eight million, six hundred twenty-two thousand, one hundred forty".
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