Base | Representation |
---|---|
bin | 100101010100000001… |
… | …1000111010110110100 |
3 | 21122211022110210122000 |
4 | 1022220003013112310 |
5 | 2303100433101210 |
6 | 100451034135300 |
7 | 5534444364222 |
oct | 1125003072664 |
9 | 248738423560 |
10 | 80128800180 |
11 | 30a89689610 |
12 | 13642b81530 |
13 | 772ca20440 |
14 | 3c41d05b12 |
15 | 213e961ac0 |
hex | 12a80c75b4 |
80128800180 has 384 divisors, whose sum is σ = 300026764800. Its totient is φ = 17492889600.
The previous prime is 80128800179. The next prime is 80128800197. The reversal of 80128800180 is 8100882108.
It is a happy number.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3153366 + ... + 3178674.
It is an arithmetic number, because the mean of its divisors is an integer number (781319700).
Almost surely, 280128800180 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 80128800180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150013382400).
80128800180 is an abundant number, since it is smaller than the sum of its proper divisors (219897964620).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80128800180 is a wasteful number, since it uses less digits than its factorization.
80128800180 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 25392 (or 25384 counting only the distinct ones).
The product of its (nonzero) digits is 8192, while the sum is 36.
The spelling of 80128800180 in words is "eighty billion, one hundred twenty-eight million, eight hundred thousand, one hundred eighty".
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