Base | Representation |
---|---|
bin | 1000001001000… |
… | …00100100001001 |
3 | 11202111112101211 |
4 | 10010200210021 |
5 | 114440301300 |
6 | 10435413121 |
7 | 1456314421 |
oct | 404404411 |
9 | 152445354 |
10 | 68290825 |
11 | 356039a9 |
12 | 1aa541a1 |
13 | 111c0895 |
14 | 90d9481 |
15 | 5ede4ba |
hex | 4120909 |
68290825 has 12 divisors (see below), whose sum is σ = 85025808. Its totient is φ = 54410000.
The previous prime is 68290793. The next prime is 68290829. The reversal of 68290825 is 52809286.
It is not a de Polignac number, because 68290825 - 25 = 68290793 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (68290829) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 834 + ... + 11716.
It is an arithmetic number, because the mean of its divisors is an integer number (7085484).
Almost surely, 268290825 is an apocalyptic number.
It is an amenable number.
68290825 is a deficient number, since it is larger than the sum of its proper divisors (16734983).
68290825 is a wasteful number, since it uses less digits than its factorization.
68290825 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 11144 (or 11139 counting only the distinct ones).
The product of its (nonzero) digits is 69120, while the sum is 40.
The square root of 68290825 is about 8263.8262929469. The cubic root of 68290825 is about 408.7465685666.
The spelling of 68290825 in words is "sixty-eight million, two hundred ninety thousand, eight hundred twenty-five".
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