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268380371 = 738340053
BaseRepresentation
bin11111111111100…
…10100011010011
3200201000010122202
433333302203103
51022201132441
642344153415
76436124030
oct1777624323
9621003582
10268380371
11128548166
1275a6886b
13437a986c
1427902387
151886519b
hexfff28d3

268380371 has 4 divisors (see below), whose sum is σ = 306720432. Its totient is φ = 230040312.

The previous prime is 268380367. The next prime is 268380391. The reversal of 268380371 is 173083862.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 268380371 - 22 = 268380367 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268380341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19170020 + ... + 19170033.

It is an arithmetic number, because the mean of its divisors is an integer number (76680108).

Almost surely, 2268380371 is an apocalyptic number.

268380371 is a deficient number, since it is larger than the sum of its proper divisors (38340061).

268380371 is an equidigital number, since it uses as much as digits as its factorization.

268380371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38340060.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 268380371 is about 16382.3188529585. The cubic root of 268380371 is about 645.0354494468.

The spelling of 268380371 in words is "two hundred sixty-eight million, three hundred eighty thousand, three hundred seventy-one".

Divisors: 1 7 38340053 268380371