Base | Representation |
---|---|
bin | 110111001001… |
… | …0010001011010 |
3 | 2000101211000000 |
4 | 1232102101122 |
5 | 24400120212 |
6 | 2511353430 |
7 | 500510463 |
oct | 156222132 |
9 | 60354000 |
10 | 28910682 |
11 | 15357029 |
12 | 9822876 |
13 | 5cb3218 |
14 | 3ba7d6a |
15 | 28111dc |
hex | 1b9245a |
28910682 has 56 divisors (see below), whose sum is σ = 66104640. Its totient is φ = 9477000.
The previous prime is 28910677. The next prime is 28910689. The reversal of 28910682 is 28601982.
It is not an unprimeable number, because it can be changed into a prime (28910689) by changing a digit.
It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 115057 + ... + 115307.
It is an arithmetic number, because the mean of its divisors is an integer number (1180440).
Almost surely, 228910682 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 28910682, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33052320).
28910682 is an abundant number, since it is smaller than the sum of its proper divisors (37193958).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28910682 is an equidigital number, since it uses as much as digits as its factorization.
28910682 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 350 (or 335 counting only the distinct ones).
The product of its (nonzero) digits is 13824, while the sum is 36.
The square root of 28910682 is about 5376.8654437321. The cubic root of 28910682 is about 306.9159407274.
It can be divided in two parts, 28910 and 682, that added together give a palindrome (29592).
The spelling of 28910682 in words is "twenty-eight million, nine hundred ten thousand, six hundred eighty-two".
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