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230642236 = 22117976577
BaseRepresentation
bin11011011111101…
…01001000111100
3121001222211200001
431233311020330
5433021022421
634515244044
75500266226
oct1557651074
9531884601
10230642236
11109211a20
12652a9624
1338a256c6
14228bb416
15153ad691
hexdbf523c

230642236 has 24 divisors (see below), whose sum is σ = 440936496. Its totient is φ = 104689920.

The previous prime is 230642233. The next prime is 230642257. The reversal of 230642236 is 632246032.

230642236 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230642231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31780 + ... + 38356.

It is an arithmetic number, because the mean of its divisors is an integer number (18372354).

Almost surely, 2230642236 is an apocalyptic number.

It is an amenable number.

230642236 is a deficient number, since it is larger than the sum of its proper divisors (210294260).

230642236 is a wasteful number, since it uses less digits than its factorization.

230642236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7389 (or 7387 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 230642236 is about 15186.9100214626. The cubic root of 230642236 is about 613.2623175758.

Adding to 230642236 its reverse (632246032), we get a palindrome (862888268).

The spelling of 230642236 in words is "two hundred thirty million, six hundred forty-two thousand, two hundred thirty-six".

Divisors: 1 2 4 11 22 44 797 1594 3188 6577 8767 13154 17534 26308 35068 72347 144694 289388 5241869 10483738 20967476 57660559 115321118 230642236