Base | Representation |
---|---|
bin | 110111001111… |
… | …1101001110111 |
3 | 2000111121012010 |
4 | 1232133221313 |
5 | 24403343440 |
6 | 2512455303 |
7 | 501126336 |
oct | 156375167 |
9 | 60447163 |
10 | 28965495 |
11 | 15394229 |
12 | 984a533 |
13 | 6002160 |
14 | 3bbdd1d |
15 | 2822580 |
hex | 1b9fa77 |
28965495 has 32 divisors (see below), whose sum is σ = 50500800. Its totient is φ = 14091264.
The previous prime is 28965491. The next prime is 28965509. The reversal of 28965495 is 59456982.
It is not a de Polignac number, because 28965495 - 22 = 28965491 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (28965491) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16521 + ... + 18189.
It is an arithmetic number, because the mean of its divisors is an integer number (1578150).
Almost surely, 228965495 is an apocalyptic number.
28965495 is a deficient number, since it is larger than the sum of its proper divisors (21535305).
28965495 is a wasteful number, since it uses less digits than its factorization.
28965495 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1779.
The product of its digits is 777600, while the sum is 48.
The square root of 28965495 is about 5381.9601447800. The cubic root of 28965495 is about 307.1097832990.
The spelling of 28965495 in words is "twenty-eight million, nine hundred sixty-five thousand, four hundred ninety-five".
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