Base | Representation |
---|---|
bin | 1001100111011… |
… | …11010110111000 |
3 | 12121210120102200 |
4 | 10303233112320 |
5 | 131123002214 |
6 | 12001030200 |
7 | 1666462605 |
oct | 463572670 |
9 | 177716380 |
10 | 80672184 |
11 | 415a022a |
12 | 23025360 |
13 | 13937328 |
14 | a9dd6ac |
15 | 7137d09 |
hex | 4cef5b8 |
80672184 has 48 divisors (see below), whose sum is σ = 220758720. Its totient is φ = 26611200.
The previous prime is 80672183. The next prime is 80672219. The reversal of 80672184 is 48127608.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (80672183) 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, 1209 + ... + 12759.
It is an arithmetic number, because the mean of its divisors is an integer number (4599140).
Almost surely, 280672184 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 80672184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110379360).
80672184 is an abundant number, since it is smaller than the sum of its proper divisors (140086536).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80672184 is a wasteful number, since it uses less digits than its factorization.
80672184 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 11660 (or 11653 counting only the distinct ones).
The product of its (nonzero) digits is 21504, while the sum is 36.
The square root of 80672184 is about 8981.7695361215. The cubic root of 80672184 is about 432.0903874655.
The spelling of 80672184 in words is "eighty million, six hundred seventy-two thousand, one hundred eighty-four".
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