Base | Representation |
---|---|
bin | 1001100011101… |
… | …11001101110000 |
3 | 12120212120101121 |
4 | 10301313031300 |
5 | 131011230310 |
6 | 11542312024 |
7 | 1662343111 |
oct | 461671560 |
9 | 176776347 |
10 | 80180080 |
11 | 41294532 |
12 | 22a28614 |
13 | 137c4346 |
14 | a912208 |
15 | 708c0da |
hex | 4c77370 |
80180080 has 40 divisors (see below), whose sum is σ = 186988032. Its totient is φ = 31974144.
The previous prime is 80180077. The next prime is 80180119. The reversal of 80180080 is 8008108.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (40).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28497 + ... + 31183.
Almost surely, 280180080 is an apocalyptic number.
80180080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.
It is an amenable number.
80180080 is an abundant number, since it is smaller than the sum of its proper divisors (106807952).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80180080 is a wasteful number, since it uses less digits than its factorization.
80180080 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3073 (or 3067 counting only the distinct ones).
The product of its (nonzero) digits is 512, while the sum is 25.
The square root of 80180080 is about 8954.3330293216. Note that the first 3 decimals coincide. The cubic root of 80180080 is about 431.2100045524.
Adding to 80180080 its reverse (8008108), we get a palindrome (88188188).
The spelling of 80180080 in words is "eighty million, one hundred eighty thousand, eighty".
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