Base | Representation |
---|---|
bin | 110111000110… |
… | …0000000001111 |
3 | 2000100111210002 |
4 | 1232030000033 |
5 | 24343310012 |
6 | 2511034515 |
7 | 500342564 |
oct | 156140017 |
9 | 60314702 |
10 | 28885007 |
11 | 15339808 |
12 | 980ba3b |
13 | 5ca4628 |
14 | 3b9c86b |
15 | 28087c2 |
hex | 1b8c00f |
28885007 has 8 divisors (see below), whose sum is σ = 29491200. Its totient is φ = 28284984.
The previous prime is 28884983. The next prime is 28885009. The reversal of 28885007 is 70058882.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 28885007 - 212 = 28880911 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 (28885009) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8594 + ... + 11472.
It is an arithmetic number, because the mean of its divisors is an integer number (3686400).
Almost surely, 228885007 is an apocalyptic number.
28885007 is a deficient number, since it is larger than the sum of its proper divisors (606193).
28885007 is a wasteful number, since it uses less digits than its factorization.
28885007 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3085.
The product of its (nonzero) digits is 35840, while the sum is 38.
The square root of 28885007 is about 5374.4773699403. The cubic root of 28885007 is about 306.8250585102.
The spelling of 28885007 in words is "twenty-eight million, eight hundred eighty-five thousand, seven".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.069 sec. • engine limits •