Base | Representation |
---|---|
bin | 11110100111111111001111 |
3 | 120002212111110 |
4 | 132213333033 |
5 | 4023344421 |
6 | 444023103 |
7 | 125144400 |
oct | 36477717 |
9 | 16085443 |
10 | 8028111 |
11 | 4593703 |
12 | 2831a93 |
13 | 1881180 |
14 | 10cd9a7 |
15 | a88a76 |
hex | 7a7fcf |
8028111 has 24 divisors (see below), whose sum is σ = 13412784. Its totient is φ = 4233600.
The previous prime is 8028109. The next prime is 8028113. The reversal of 8028111 is 1118208.
It is an interprime number because it is at equal distance from previous prime (8028109) and next prime (8028113).
It is not a de Polignac number, because 8028111 - 21 = 8028109 is a prime.
It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.
It is a Harshad number since it is a multiple of its sum of digits (21).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (8028113) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 190 + ... + 4011.
It is an arithmetic number, because the mean of its divisors is an integer number (558866).
Almost surely, 28028111 is an apocalyptic number.
8028111 is a deficient number, since it is larger than the sum of its proper divisors (5384673).
8028111 is a wasteful number, since it uses less digits than its factorization.
8028111 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4231 (or 4224 counting only the distinct ones).
The product of its (nonzero) digits is 128, while the sum is 21.
The square root of 8028111 is about 2833.3921366447. The cubic root of 8028111 is about 200.2339844829.
Subtracting from 8028111 its reverse (1118208), we obtain a triangular number (6909903 = T3717).
The spelling of 8028111 in words is "eight million, twenty-eight thousand, one hundred eleven".
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