| Base | Representation |
|---|---|
| bin | 10001001111000… |
| … | …100111101010100 |
| 3 | 202011010010000000 |
| 4 | 101033010331110 |
| 5 | 1043011241030 |
| 6 | 44405451300 |
| 7 | 10110602025 |
| oct | 2117047524 |
| 9 | 664103000 |
| 10 | 289165140 |
| 11 | 139254060 |
| 12 | 80a10b30 |
| 13 | 47ba6244 |
| 14 | 2a592c4c |
| 15 | 1a5bd860 |
| hex | 113c4f54 |
289165140 has 192 divisors, whose sum is σ = 995178240. Its totient is φ = 69984000.
The previous prime is 289165139. The next prime is 289165141. The reversal of 289165140 is 41561982.
It is an interprime number because it is at equal distance from previous prime (289165139) and next prime (289165141).
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a junction number, because it is equal to n+sod(n) for n = 289165095 and 289165104.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (289165141) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 480840 + ... + 481440.
It is an arithmetic number, because the mean of its divisors is an integer number (5183220).
Almost surely, 2289165140 is an apocalyptic number.
289165140 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 289165140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (497589120).
289165140 is an abundant number, since it is smaller than the sum of its proper divisors (706013100).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
289165140 is a wasteful number, since it uses less digits than its factorization.
289165140 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 642 (or 622 counting only the distinct ones).
The product of its (nonzero) digits is 17280, while the sum is 36.
The square root of 289165140 is about 17004.8563651682. The cubic root of 289165140 is about 661.2748088124.
Adding to 289165140 its sum of digits (36), we get a triangular number (289165176 = T24048).
The spelling of 289165140 in words is "two hundred eighty-nine million, one hundred sixty-five thousand, one hundred forty".
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