Base | Representation |
---|---|
bin | 1001101000111… |
… | …11111010001000 |
3 | 12122011200020000 |
4 | 10310133322020 |
5 | 131200333143 |
6 | 12005203000 |
7 | 2001251436 |
oct | 464377210 |
9 | 178150200 |
10 | 80871048 |
11 | 41716685 |
12 | 23100460 |
13 | 139a69bb |
14 | aa51d56 |
15 | 7176bd3 |
hex | 4d1fe88 |
80871048 has 80 divisors (see below), whose sum is σ = 232704780. Its totient is φ = 26220672.
The previous prime is 80871047. The next prime is 80871083. The reversal of 80871048 is 84017808.
It can be written as a sum of positive squares in 2 ways, for example, as 57426084 + 23444964 = 7578^2 + 4842^2 .
It is a Harshad number since it is a multiple of its sum of digits (36).
It is not an unprimeable number, because it can be changed into a prime (80871041) by changing a digit.
It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22290 + ... + 25662.
Almost surely, 280871048 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 80871048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116352390).
80871048 is an abundant number, since it is smaller than the sum of its proper divisors (151833732).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80871048 is a wasteful number, since it uses less digits than its factorization.
80871048 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3428 (or 3415 counting only the distinct ones).
The product of its (nonzero) digits is 14336, while the sum is 36.
The square root of 80871048 is about 8992.8331464561. The cubic root of 80871048 is about 432.4451430084.
The spelling of 80871048 in words is "eighty million, eight hundred seventy-one thousand, forty-eight".
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