Base | Representation |
---|---|
bin | 1001101000101… |
… | …01011101000001 |
3 | 12122002111110222 |
4 | 10310111131001 |
5 | 131143000400 |
6 | 12004232425 |
7 | 2001012542 |
oct | 464253501 |
9 | 178074428 |
10 | 80828225 |
11 | 41697495 |
12 | 2309b715 |
13 | 1399036a |
14 | aa404c9 |
15 | 7169185 |
hex | 4d15741 |
80828225 has 12 divisors (see below), whose sum is σ = 100457856. Its totient is φ = 64513680.
The previous prime is 80828213. The next prime is 80828227. The reversal of 80828225 is 52282808.
It is not a de Polignac number, because 80828225 - 26 = 80828161 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (80828227) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8084 + ... + 15066.
It is an arithmetic number, because the mean of its divisors is an integer number (8371488).
Almost surely, 280828225 is an apocalyptic number.
It is an amenable number.
80828225 is a deficient number, since it is larger than the sum of its proper divisors (19629631).
80828225 is a wasteful number, since it uses less digits than its factorization.
80828225 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7456 (or 7451 counting only the distinct ones).
The product of its (nonzero) digits is 20480, while the sum is 35.
The square root of 80828225 is about 8990.4518796332. The cubic root of 80828225 is about 432.3687997911.
The spelling of 80828225 in words is "eighty million, eight hundred twenty-eight thousand, two hundred twenty-five".
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