Base | Representation |
---|---|
bin | 1001101000101… |
… | …10010000000000 |
3 | 12122002122221211 |
4 | 10310112100000 |
5 | 131143101423 |
6 | 12004255504 |
7 | 2001025213 |
oct | 464262000 |
9 | 178078854 |
10 | 80831488 |
11 | 41699991 |
12 | 230a1594 |
13 | 139919aa |
14 | aa4177a |
15 | 716a10d |
hex | 4d16400 |
80831488 has 44 divisors (see below), whose sum is σ = 162818380. Its totient is φ = 40108032.
The previous prime is 80831483. The next prime is 80831489. The reversal of 80831488 is 88413808.
It can be written as a sum of positive squares in 2 ways, for example, as 49112064 + 31719424 = 7008^2 + 5632^2 .
It is a self number, because there is not a number n which added to its sum of digits gives 80831488.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (80831483) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197428 + ... + 197836.
Almost surely, 280831488 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 80831488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81409190).
80831488 is an abundant number, since it is smaller than the sum of its proper divisors (81986892).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80831488 is a wasteful number, since it uses less digits than its factorization.
80831488 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 622 (or 604 counting only the distinct ones).
The product of its (nonzero) digits is 49152, while the sum is 40.
The square root of 80831488 is about 8990.6333481018. The cubic root of 80831488 is about 432.3746178924.
The spelling of 80831488 in words is "eighty million, eight hundred thirty-one thousand, four hundred eighty-eight".
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