Base | Representation |
---|---|
bin | 1001100100111… |
… | …11100110001000 |
3 | 12121011222021112 |
4 | 10302133212020 |
5 | 131032023410 |
6 | 11550025452 |
7 | 1663632245 |
oct | 462374610 |
9 | 177158245 |
10 | 80345480 |
11 | 41397826 |
12 | 22aa8288 |
13 | 13851707 |
14 | a9565cc |
15 | 70c1105 |
hex | 4c9f988 |
80345480 has 16 divisors (see below), whose sum is σ = 180777420. Its totient is φ = 32138176.
The previous prime is 80345467. The next prime is 80345491. The reversal of 80345480 is 8454308.
It can be written as a sum of positive squares in 2 ways, for example, as 69989956 + 10355524 = 8366^2 + 3218^2 .
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 3 ways as a sum of consecutive naturals, for example, 1004279 + ... + 1004358.
Almost surely, 280345480 is an apocalyptic number.
It is an amenable number.
80345480 is an abundant number, since it is smaller than the sum of its proper divisors (100431940).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80345480 is a wasteful number, since it uses less digits than its factorization.
80345480 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2008648 (or 2008644 counting only the distinct ones).
The product of its (nonzero) digits is 15360, while the sum is 32.
The square root of 80345480 is about 8963.5640233113. The cubic root of 80345480 is about 431.5063090228.
Adding to 80345480 its reverse (8454308), we get a palindrome (88799788).
The spelling of 80345480 in words is "eighty million, three hundred forty-five thousand, four hundred eighty".
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