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243143204 = 22242325087
BaseRepresentation
bin11100111111000…
…01001000100100
3121221111221202212
432133201020210
5444221040304
640043222552
76011453213
oct1637411044
9557457685
10243143204
111152800a7
1269517a58
133b4b1725
142441307a
151652c66e
hexe7e1224

243143204 has 12 divisors (see below), whose sum is σ = 425693184. Its totient is φ = 121516584.

The previous prime is 243143203. The next prime is 243143227. The reversal of 243143204 is 402341342.

It is a self number, because there is not a number n which added to its sum of digits gives 243143204.

It is not an unprimeable number, because it can be changed into a prime (243143203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2852 + ... + 22235.

It is an arithmetic number, because the mean of its divisors is an integer number (35474432).

Almost surely, 2243143204 is an apocalyptic number.

It is an amenable number.

243143204 is a deficient number, since it is larger than the sum of its proper divisors (182549980).

243143204 is a wasteful number, since it uses less digits than its factorization.

243143204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27514 (or 27512 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 243143204 is about 15593.0498620379. The cubic root of 243143204 is about 624.1477056927.

Adding to 243143204 its reverse (402341342), we get a palindrome (645484546).

The spelling of 243143204 in words is "two hundred forty-three million, one hundred forty-three thousand, two hundred four".

Divisors: 1 2 4 2423 4846 9692 25087 50174 100348 60785801 121571602 243143204