Base | Representation |
---|---|
bin | 111101111000111101111 |
3 | 10211000220200 |
4 | 13233013233 |
5 | 1004344030 |
6 | 111244543 |
7 | 23144403 |
oct | 7570757 |
9 | 3730820 |
10 | 2028015 |
11 | 1165750 |
12 | 819753 |
13 | 560112 |
14 | 3ab103 |
15 | 2a0d60 |
hex | 1ef1ef |
2028015 has 48 divisors (see below), whose sum is σ = 4077216. Its totient is φ = 921600.
The previous prime is 2027959. The next prime is 2028017. The reversal of 2028015 is 5108202.
2028015 is nontrivially palindromic in base 2 and base 8.
It is not a de Polignac number, because 2028015 - 26 = 2027951 is a prime.
It is a super-2 number, since 2×20280152 = 8225689680450, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2028017) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8295 + ... + 8535.
It is an arithmetic number, because the mean of its divisors is an integer number (84942).
22028015 is an apocalyptic number.
2028015 is an abundant number, since it is smaller than the sum of its proper divisors (2049201).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2028015 is a wasteful number, since it uses less digits than its factorization.
2028015 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 280 (or 277 counting only the distinct ones).
The product of its (nonzero) digits is 160, while the sum is 18.
The square root of 2028015 is about 1424.0839160667. The cubic root of 2028015 is about 126.5776575353.
The spelling of 2028015 in words is "two million, twenty-eight thousand, fifteen".
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