| Base | Representation |
|---|---|
| bin | 10001001000011… |
| … | …100000111101000 |
| 3 | 202000211200222101 |
| 4 | 101020130013220 |
| 5 | 1042040100000 |
| 6 | 44304303144 |
| 7 | 10060033522 |
| oct | 2110340750 |
| 9 | 660750871 |
| 10 | 287425000 |
| 11 | 138275725 |
| 12 | 80311ab4 |
| 13 | 47717185 |
| 14 | 2a25ca12 |
| 15 | 1a377e6a |
| hex | 1121c1e8 |
287425000 has 48 divisors (see below), whose sum is σ = 673667820. Its totient is φ = 114960000.
The previous prime is 287424971. The next prime is 287425009. The reversal of 287425000 is 524782.
It can be written as a sum of positive squares in 6 ways, for example, as 25826724 + 261598276 = 5082^2 + 16174^2 .
It is a super-2 number, since 2×2874250002 = 165226261250000000, which contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 287425000.
It is not an unprimeable number, because it can be changed into a prime (287425009) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19252 + ... + 30748.
Almost surely, 2287425000 is an apocalyptic number.
287425000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 287425000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336833910).
287425000 is an abundant number, since it is smaller than the sum of its proper divisors (386242820).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
287425000 is an equidigital number, since it uses as much as digits as its factorization.
287425000 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 11528 (or 11504 counting only the distinct ones).
The product of its (nonzero) digits is 4480, while the sum is 28.
The square root of 287425000 is about 16953.6131842153. The cubic root of 287425000 is about 659.9456643361.
Adding to 287425000 its reverse (524782), we get a palindrome (287949782).
The spelling of 287425000 in words is "two hundred eighty-seven million, four hundred twenty-five thousand".
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