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204302389 is a prime number
BaseRepresentation
bin11000010110101…
…10100000110101
3112020102122012011
430023112200311
5404300134024
632134524221
75030353534
oct1413264065
9466378164
10204302389
11a5361455
1258506671
13334326b5
141d1c231b
1512e09094
hexc2d6835

204302389 has 2 divisors, whose sum is σ = 204302390. Its totient is φ = 204302388.

The previous prime is 204302387. The next prime is 204302471. The reversal of 204302389 is 983203402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129618225 + 74684164 = 11385^2 + 8642^2 .

It is a cyclic number.

It is not a de Polignac number, because 204302389 - 21 = 204302387 is a prime.

It is a super-2 number, since 2×2043023892 = 83478932302214642, which contains 22 as substring.

Together with 204302387, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204302389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204302381) 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 as a sum of consecutive naturals, namely, 102151194 + 102151195.

It is an arithmetic number, because the mean of its divisors is an integer number (102151195).

Almost surely, 2204302389 is an apocalyptic number.

It is an amenable number.

204302389 is a deficient number, since it is larger than the sum of its proper divisors (1).

204302389 is an equidigital number, since it uses as much as digits as its factorization.

204302389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 204302389 is about 14293.4386695434. The cubic root of 204302389 is about 588.9672529723.

The spelling of 204302389 in words is "two hundred four million, three hundred two thousand, three hundred eighty-nine".