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288109 is a prime number
BaseRepresentation
bin1000110010101101101
3112122012201
41012111231
533204414
610101501
72306653
oct1062555
9478181
10288109
11187508
1211a891
13a11a3
1476dd3
155a574
hex4656d

288109 has 2 divisors, whose sum is σ = 288110. Its totient is φ = 288108.

The previous prime is 288089. The next prime is 288137. The reversal of 288109 is 901882.

It is an a-pointer prime, because the next prime (288137) can be obtained adding 288109 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 272484 + 15625 = 522^2 + 125^2 .

It is a cyclic number.

It is not a de Polignac number, because 288109 - 25 = 288077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (288179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144054 + 144055.

It is an arithmetic number, because the mean of its divisors is an integer number (144055).

2288109 is an apocalyptic number.

It is an amenable number.

288109 is a deficient number, since it is larger than the sum of its proper divisors (1).

288109 is an equidigital number, since it uses as much as digits as its factorization.

288109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 288109 is about 536.7578597468. The cubic root of 288109 is about 66.0468751787.

The spelling of 288109 in words is "two hundred eighty-eight thousand, one hundred nine".