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288380017 = 2377121321
BaseRepresentation
bin10001001100000…
…101010001110001
3202002122020000101
4101030011101301
51042311130032
644340552401
710101122032
oct2114052161
9662566011
10288380017
111388681a2
12806b2701
134798ca83
142a42aa89
151a4b5de7
hex11305471

288380017 has 4 divisors (see below), whose sum is σ = 288503716. Its totient is φ = 288256320.

The previous prime is 288379997. The next prime is 288380039. The reversal of 288380017 is 710083882.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 710083882 = 2355041941.

It can be written as a sum of positive squares in 2 ways, for example, as 175191696 + 113188321 = 13236^2 + 10639^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-288380017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (288380047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58284 + ... + 63037.

It is an arithmetic number, because the mean of its divisors is an integer number (72125929).

Almost surely, 2288380017 is an apocalyptic number.

It is an amenable number.

288380017 is a deficient number, since it is larger than the sum of its proper divisors (123699).

288380017 is a wasteful number, since it uses less digits than its factorization.

288380017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123698.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 288380017 is about 16981.7554157396. The cubic root of 288380017 is about 660.6757824160.

The spelling of 288380017 in words is "two hundred eighty-eight million, three hundred eighty thousand, seventeen".

Divisors: 1 2377 121321 288380017