Base | Representation |
---|---|
bin | 1001100100100… |
… | …00111001100000 |
3 | 12121001220200220 |
4 | 10302100321200 |
5 | 131023112110 |
6 | 11544443040 |
7 | 1663261605 |
oct | 462207140 |
9 | 177056626 |
10 | 80285280 |
11 | 41356579 |
12 | 22a79480 |
13 | 138301aa |
14 | a93c6ac |
15 | 70ad370 |
hex | 4c90e60 |
80285280 has 48 divisors (see below), whose sum is σ = 252900144. Its totient is φ = 21409280.
The previous prime is 80285273. The next prime is 80285291. The reversal of 80285280 is 8258208.
It is a tau number, because it is divible by the number of its divisors (48).
It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.
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, 83151 + ... + 84110.
It is an arithmetic number, because the mean of its divisors is an integer number (5268753).
Almost surely, 280285280 is an apocalyptic number.
80285280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.
It is an amenable number.
80285280 is an abundant number, since it is smaller than the sum of its proper divisors (172614864).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80285280 is a wasteful number, since it uses less digits than its factorization.
80285280 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 167279 (or 167271 counting only the distinct ones).
The product of its (nonzero) digits is 10240, while the sum is 33.
The square root of 80285280 is about 8960.2053547896. The cubic root of 80285280 is about 431.3985113375.
The spelling of 80285280 in words is "eighty million, two hundred eighty-five thousand, two hundred eighty".
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