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230638164 = 223181106187
BaseRepresentation
bin11011011111101…
…00001001010100
3121001222122002020
431233310021110
5433020410124
634515213140
75500251321
oct1557641124
9531878066
10230638164
11109209959
12652a71b0
1338a238b3
14228b9b48
15153ac379
hexdbf4254

230638164 has 24 divisors (see below), whose sum is σ = 541134048. Its totient is φ = 76453920.

The previous prime is 230638153. The next prime is 230638183. The reversal of 230638164 is 461836032.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50922 + ... + 55265.

It is an arithmetic number, because the mean of its divisors is an integer number (22547252).

Almost surely, 2230638164 is an apocalyptic number.

It is an amenable number.

230638164 is an abundant number, since it is smaller than the sum of its proper divisors (310495884).

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

230638164 is a wasteful number, since it uses less digits than its factorization.

230638164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106375 (or 106373 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 230638164 is about 15186.7759580498. The cubic root of 230638164 is about 613.2587084958.

It can be divided in two parts, 2306 and 38164, that added together give a triangular number (40470 = T284).

The spelling of 230638164 in words is "two hundred thirty million, six hundred thirty-eight thousand, one hundred sixty-four".

Divisors: 1 2 3 4 6 12 181 362 543 724 1086 2172 106187 212374 318561 424748 637122 1274244 19219847 38439694 57659541 76879388 115319082 230638164