Base | Representation |
---|---|
bin | 1101000100001011101 |
3 | 210202021111 |
4 | 1220201131 |
5 | 102200000 |
6 | 13102021 |
7 | 3432115 |
oct | 1504135 |
9 | 722244 |
10 | 428125 |
11 | 272725 |
12 | 187911 |
13 | 11cb39 |
14 | b2045 |
15 | 86cba |
hex | 6885d |
428125 has 12 divisors (see below), whose sum is σ = 539028. Its totient is φ = 340000.
The previous prime is 428093. The next prime is 428137. The reversal of 428125 is 521824.
It can be written as a sum of positive squares in 6 ways, for example, as 338724 + 89401 = 582^2 + 299^2 .
It is not a de Polignac number, because 428125 - 25 = 428093 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 428096 and 428105.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3057 + ... + 3193.
It is an arithmetic number, because the mean of its divisors is an integer number (44919).
2428125 is an apocalyptic number.
It is an amenable number.
428125 is a deficient number, since it is larger than the sum of its proper divisors (110903).
428125 is an frugal number, since it uses more digits than its factorization.
428125 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 162 (or 142 counting only the distinct ones).
The product of its digits is 640, while the sum is 22.
The square root of 428125 is about 654.3126164151. The cubic root of 428125 is about 75.3685562872.
Adding to 428125 its reverse (521824), we get a palindrome (949949).
The spelling of 428125 in words is "four hundred twenty-eight thousand, one hundred twenty-five".
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