Base | Representation |
---|---|
bin | 110000001010100… |
… | …101010110101000 |
3 | 2002022112202110211 |
4 | 300022211112220 |
5 | 3123332041213 |
6 | 212103550504 |
7 | 26011400503 |
oct | 6012452650 |
9 | 2068482424 |
10 | 808080808 |
11 | 385160087 |
12 | 1a675b434 |
13 | cb552032 |
14 | 7947013a |
15 | 4ae2153d |
hex | 302a55a8 |
808080808 has 32 divisors (see below), whose sum is σ = 1558005120. Its totient is φ = 392688000.
The previous prime is 808080803. The next prime is 808080817.
It is a happy number.
808080808 is nontrivially palindromic in base 10.
It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.
808080808 is a strobogrammatic number because it is the same when read upside-down.
808080808 is an undulating number in base 10.
808080808 is a modest number, since divided by 80808 gives 808 as remainder.
It is not an unprimeable number, because it can be changed into a prime (808080803) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84343 + ... + 93433.
It is an arithmetic number, because the mean of its divisors is an integer number (48687660).
Almost surely, 2808080808 is an apocalyptic number.
It is an amenable number.
808080808 is a deficient number, since it is larger than the sum of its proper divisors (749924312).
808080808 is a wasteful number, since it uses less digits than its factorization.
808080808 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 9409 (or 9405 counting only the distinct ones).
The product of its (nonzero) digits is 32768, while the sum is 40.
The square root of 808080808 is about 28426.7621793267. The cubic root of 808080808 is about 931.4329503297.
It can be divided in two parts, 8080 and 80808, that added together give a palindrome (88888).
The spelling of 808080808 in words is "eight hundred eight million, eighty thousand, eight hundred eight".
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