Base | Representation |
---|---|
bin | 1001100110000… |
… | …10110100100000 |
3 | 12121110022012020 |
4 | 10303002310200 |
5 | 131101133020 |
6 | 11553101440 |
7 | 1665103011 |
oct | 463026440 |
9 | 177408166 |
10 | 80489760 |
11 | 4148616a |
12 | 22b57880 |
13 | 138a22a0 |
14 | a993008 |
15 | 70edc40 |
hex | 4cc2d20 |
80489760 has 96 divisors (see below), whose sum is σ = 273067200. Its totient is φ = 19811328.
The previous prime is 80489743. The next prime is 80489767. The reversal of 80489760 is 6798408.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (96).
It is not an unprimeable number, because it can be changed into a prime (80489767) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210 + ... + 12689.
It is an arithmetic number, because the mean of its divisors is an integer number (2844450).
Almost surely, 280489760 is an apocalyptic number.
80489760 is a gapful number since it is divisible by the number (80) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 80489760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136533600).
80489760 is an abundant number, since it is smaller than the sum of its proper divisors (192577440).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80489760 is a wasteful number, since it uses less digits than its factorization.
80489760 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 12930 (or 12922 counting only the distinct ones).
The product of its (nonzero) digits is 96768, while the sum is 42.
The square root of 80489760 is about 8971.6085514249. The cubic root of 80489760 is about 431.7644463446.
The spelling of 80489760 in words is "eighty million, four hundred eighty-nine thousand, seven hundred sixty".
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