Base | Representation |
---|---|
bin | 110101100011… |
… | …1111111100111 |
3 | 1221211201110200 |
4 | 1223013333213 |
5 | 24142112101 |
6 | 2441521543 |
7 | 460460106 |
oct | 153077747 |
9 | 57751420 |
10 | 28082151 |
11 | 14940599 |
12 | 94a32b3 |
13 | 5a83076 |
14 | 3a3003d |
15 | 26ea986 |
hex | 1ac7fe7 |
28082151 has 12 divisors (see below), whose sum is σ = 41119728. Its totient is φ = 18464544.
The previous prime is 28082107. The next prime is 28082161. The reversal of 28082151 is 15128082.
It is not a de Polignac number, because 28082151 - 213 = 28073959 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (28082101) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20715 + ... + 22028.
It is an arithmetic number, because the mean of its divisors is an integer number (3426644).
Almost surely, 228082151 is an apocalyptic number.
28082151 is a deficient number, since it is larger than the sum of its proper divisors (13037577).
28082151 is a wasteful number, since it uses less digits than its factorization.
28082151 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 42822 (or 42819 counting only the distinct ones).
The product of its (nonzero) digits is 1280, while the sum is 27.
The square root of 28082151 is about 5299.2594765684. The cubic root of 28082151 is about 303.9555820087.
The spelling of 28082151 in words is "twenty-eight million, eighty-two thousand, one hundred fifty-one".
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