Base | Representation |
---|---|
bin | 1001101000011… |
… | …10100101010000 |
3 | 12122001001212120 |
4 | 10310032211100 |
5 | 131141100310 |
6 | 12003454240 |
7 | 2000534514 |
oct | 464164520 |
9 | 178031776 |
10 | 80800080 |
11 | 41678329 |
12 | 23087380 |
13 | 139805ca |
14 | aa34144 |
15 | 7160b70 |
hex | 4d0e950 |
80800080 has 40 divisors (see below), whose sum is σ = 250480992. Its totient is φ = 21546624.
The previous prime is 80800073. The next prime is 80800121. The reversal of 80800080 is 8000808.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (40).
It is a Harshad number since it is a multiple of its sum of digits (24).
It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.
It is a self number, because there is not a number n which added to its sum of digits gives 80800080.
It is a congruent number.
It is an unprimeable number.
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 7 ways as a sum of consecutive naturals, for example, 168094 + ... + 168573.
Almost surely, 280800080 is an apocalyptic number.
80800080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.
It is an amenable number.
80800080 is an abundant number, since it is smaller than the sum of its proper divisors (169680912).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80800080 is a wasteful number, since it uses less digits than its factorization.
80800080 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 336683 (or 336677 counting only the distinct ones).
The product of its (nonzero) digits is 512, while the sum is 24.
The square root of 80800080 is about 8988.8864716382. The cubic root of 80800080 is about 432.3186092683.
Adding to 80800080 its reverse (8000808), we get a palindrome (88800888).
The spelling of 80800080 in words is "eighty million, eight hundred thousand, eighty".
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