Base | Representation |
---|---|
bin | 1010110101000111001011 |
3 | 12100020100200 |
4 | 22311013023 |
5 | 1211321422 |
6 | 140503243 |
7 | 33062634 |
oct | 12650713 |
9 | 5306320 |
10 | 2838987 |
11 | 1669a78 |
12 | b4ab23 |
13 | 785298 |
14 | 53c88b |
15 | 3b12ac |
hex | 2b51cb |
2838987 has 12 divisors (see below), whose sum is σ = 4117464. Its totient is φ = 1884960.
The previous prime is 2838937. The next prime is 2839007. The reversal of 2838987 is 7898382.
It is not a de Polignac number, because 2838987 - 27 = 2838859 is a prime.
It is a d-powerful number, because it can be written as 27 + 8 + 311 + 85 + 96 + 87 + 73 .
It is not an unprimeable number, because it can be changed into a prime (2838907) 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, 2503 + ... + 3455.
It is an arithmetic number, because the mean of its divisors is an integer number (343122).
22838987 is an apocalyptic number.
2838987 is a deficient number, since it is larger than the sum of its proper divisors (1278477).
2838987 is a wasteful number, since it uses less digits than its factorization.
2838987 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1290 (or 1287 counting only the distinct ones).
The product of its digits is 193536, while the sum is 45.
The square root of 2838987 is about 1684.9293753745. The cubic root of 2838987 is about 141.5971355832.
The spelling of 2838987 in words is "two million, eight hundred thirty-eight thousand, nine hundred eighty-seven".
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