Base | Representation |
---|---|
bin | 1001100110101… |
… | …10101000000111 |
3 | 12121121102110221 |
4 | 10303112220013 |
5 | 131111232022 |
6 | 11554525211 |
7 | 1665561355 |
oct | 463265007 |
9 | 177542427 |
10 | 80570887 |
11 | 41531111 |
12 | 22b96807 |
13 | 139001a7 |
14 | a9b47d5 |
15 | 7117cc7 |
hex | 4cd6a07 |
80570887 has 8 divisors (see below), whose sum is σ = 84950960. Its totient is φ = 76204800.
The previous prime is 80570869. The next prime is 80570911. The reversal of 80570887 is 78807508.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-80570887 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (80570807) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9637 + ... + 15937.
It is an arithmetic number, because the mean of its divisors is an integer number (10618870).
Almost surely, 280570887 is an apocalyptic number.
80570887 is a deficient number, since it is larger than the sum of its proper divisors (4380073).
80570887 is a wasteful number, since it uses less digits than its factorization.
80570887 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6993.
The product of its (nonzero) digits is 125440, while the sum is 43.
The square root of 80570887 is about 8976.1287312516. The cubic root of 80570887 is about 431.9094585485.
The spelling of 80570887 in words is "eighty million, five hundred seventy thousand, eight hundred eighty-seven".
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