Base | Representation |
---|---|
bin | 110110101101… |
… | …0001001100001 |
3 | 1222222010122220 |
4 | 1231122021201 |
5 | 24320241201 |
6 | 2502421253 |
7 | 465532332 |
oct | 155321141 |
9 | 58863586 |
10 | 28680801 |
11 | 1520a346 |
12 | 9731829 |
13 | 5c326b6 |
14 | 3b48289 |
15 | 27b8036 |
hex | 1b5a261 |
28680801 has 8 divisors (see below), whose sum is σ = 38271744. Its totient is φ = 19105200.
The previous prime is 28680781. The next prime is 28680811. The reversal of 28680801 is 10808682.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a de Polignac number, because none of the positive numbers 2k-28680801 is a prime.
It is not an unprimeable number, because it can be changed into a prime (28680811) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1651 + ... + 7751.
It is an arithmetic number, because the mean of its divisors is an integer number (4783968).
Almost surely, 228680801 is an apocalyptic number.
It is an amenable number.
28680801 is a deficient number, since it is larger than the sum of its proper divisors (9590943).
28680801 is a wasteful number, since it uses less digits than its factorization.
28680801 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7671.
The product of its (nonzero) digits is 6144, while the sum is 33.
The square root of 28680801 is about 5355.4459198091. The cubic root of 28680801 is about 306.1003024598.
The spelling of 28680801 in words is "twenty-eight million, six hundred eighty thousand, eight hundred one".
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