Base | Representation |
---|---|
bin | 11011011011011… |
… | …01110001010001 |
3 | 121000221200001221 |
4 | 31231231301101 |
5 | 432400302021 |
6 | 34455325041 |
7 | 5462466541 |
oct | 1555556121 |
9 | 530850057 |
10 | 230087761 |
11 | 108973382 |
12 | 65080781 |
13 | 38890207 |
14 | 227b5321 |
15 | 152ee241 |
hex | db6dc51 |
230087761 has 8 divisors (see below), whose sum is σ = 231809864. Its totient is φ = 228372480.
The previous prime is 230087749. The next prime is 230087779. The reversal of 230087761 is 167780032.
It can be written as a sum of positive squares in 4 ways, for example, as 27196225 + 202891536 = 5215^2 + 14244^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 230087761 - 25 = 230087729 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (230087261) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79801 + ... + 82633.
It is an arithmetic number, because the mean of its divisors is an integer number (28976233).
Almost surely, 2230087761 is an apocalyptic number.
It is an amenable number.
230087761 is a deficient number, since it is larger than the sum of its proper divisors (1722103).
230087761 is a wasteful number, since it uses less digits than its factorization.
230087761 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3411.
The product of its (nonzero) digits is 14112, while the sum is 34.
The square root of 230087761 is about 15168.6440066342. The cubic root of 230087761 is about 612.7704858921.
The spelling of 230087761 in words is "two hundred thirty million, eighty-seven thousand, seven hundred sixty-one".
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