[go: up one dir, main page]

Search a number
-
+
230711761 = 7371137883
BaseRepresentation
bin11011100000001…
…10000111010001
3121002010101001001
431300012013101
5433030234021
634520542001
75501006020
oct1560060721
9532111031
10230711761
1110925a185
1265321901
1338a4b247
14228d88b7
15153c4091
hexdc061d1

230711761 has 16 divisors (see below), whose sum is σ = 273227904. Its totient is φ = 190681344.

The previous prime is 230711693. The next prime is 230711801. The reversal of 230711761 is 167117032.

It is not a de Polignac number, because 230711761 - 213 = 230703569 is a prime.

It is a super-4 number, since 4×2307117614 (a number of 35 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230711161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25326 + ... + 33208.

It is an arithmetic number, because the mean of its divisors is an integer number (17076744).

Almost surely, 2230711761 is an apocalyptic number.

It is an amenable number.

230711761 is a deficient number, since it is larger than the sum of its proper divisors (42516143).

230711761 is a wasteful number, since it uses less digits than its factorization.

230711761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8040.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 230711761 is about 15189.1988267979. The cubic root of 230711761 is about 613.3239321640.

Adding to 230711761 its reverse (167117032), we get a palindrome (397828793).

The spelling of 230711761 in words is "two hundred thirty million, seven hundred eleven thousand, seven hundred sixty-one".

Divisors: 1 7 37 113 259 791 4181 7883 29267 55181 291671 890779 2041697 6235453 32958823 230711761