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230776660 = 22519607307
BaseRepresentation
bin11011100000101…
…01111101010100
3121002020200001201
431300111331110
5433034323120
634522202244
75501366152
oct1560257524
9532220051
10230776660
111092a3a14
1265353384
1338a7194a
14229143d2
15153d840a
hexdc15f54

230776660 has 24 divisors (see below), whose sum is σ = 510138720. Its totient is φ = 87452064.

The previous prime is 230776633. The next prime is 230776661. The reversal of 230776660 is 66677032.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230776661) 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, 303274 + ... + 304033.

It is an arithmetic number, because the mean of its divisors is an integer number (21255780).

Almost surely, 2230776660 is an apocalyptic number.

230776660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230776660 is an abundant number, since it is smaller than the sum of its proper divisors (279362060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

230776660 is a wasteful number, since it uses less digits than its factorization.

230776660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607335 (or 607333 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 37.

The square root of 230776660 is about 15191.3350302072. The cubic root of 230776660 is about 613.3814359196.

The spelling of 230776660 in words is "two hundred thirty million, seven hundred seventy-six thousand, six hundred sixty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 380 607307 1214614 2429228 3036535 6073070 11538833 12146140 23077666 46155332 57694165 115388330 230776660