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230647761 = 3228199091
BaseRepresentation
bin11011011111101…
…10011111010001
3121002000010020200
431233312133101
5433021212021
634515325413
75500321311
oct1557663721
9532003220
10230647761
11109216093
12652b0869
1338a28086
14228bd441
15153b0126
hexdbf67d1

230647761 has 12 divisors (see below), whose sum is σ = 333312720. Its totient is φ = 153693720.

The previous prime is 230647733. The next prime is 230647763. The reversal of 230647761 is 167746032.

230647761 is a `hidden beast` number, since 2 + 3 + 0 + 647 + 7 + 6 + 1 = 666.

It is not a de Polignac number, because 230647761 - 27 = 230647633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (230647763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20826 + ... + 29916.

It is an arithmetic number, because the mean of its divisors is an integer number (27776060).

Almost surely, 2230647761 is an apocalyptic number.

It is an amenable number.

230647761 is a deficient number, since it is larger than the sum of its proper divisors (102664959).

230647761 is a wasteful number, since it uses less digits than its factorization.

230647761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11916 (or 11913 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 230647761 is about 15187.0919204435. The cubic root of 230647761 is about 613.2672144055.

The spelling of 230647761 in words is "two hundred thirty million, six hundred forty-seven thousand, seven hundred sixty-one".

Divisors: 1 3 9 2819 8457 9091 25371 27273 81819 25627529 76882587 230647761