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268075393 = 370972277
BaseRepresentation
bin11111111101010…
…00000110000001
3200200102122022021
433332220012001
51022111403033
642333441441
76433413625
oct1776500601
9620378267
10268075393
1112835a013
1275940281
1343700ac1
1427863185
1518804b2d
hexffa8181

268075393 has 4 divisors (see below), whose sum is σ = 268151380. Its totient is φ = 267999408.

The previous prime is 268075331. The next prime is 268075399. The reversal of 268075393 is 393570862.

268075393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 393570862 = 2196785431.

It can be written as a sum of positive squares in 2 ways, for example, as 167133184 + 100942209 = 12928^2 + 10047^2 .

It is a cyclic number.

It is not a de Polignac number, because 268075393 - 29 = 268074881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268075399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32430 + ... + 39847.

It is an arithmetic number, because the mean of its divisors is an integer number (67037845).

Almost surely, 2268075393 is an apocalyptic number.

It is an amenable number.

268075393 is a deficient number, since it is larger than the sum of its proper divisors (75987).

268075393 is an equidigital number, since it uses as much as digits as its factorization.

268075393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75986.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 268075393 is about 16373.0080620514. The cubic root of 268075393 is about 644.7910249838.

The spelling of 268075393 in words is "two hundred sixty-eight million, seventy-five thousand, three hundred ninety-three".

Divisors: 1 3709 72277 268075393