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268512397 is a prime number
BaseRepresentation
bin10000000000010…
…010110010001101
3200201020211202121
4100000102302031
51022214344042
642351052541
76440213656
oct2000226215
9621224677
10268512397
1112862837a
1275b11151
134382499a
142793852d
151888e367
hex10012c8d

268512397 has 2 divisors, whose sum is σ = 268512398. Its totient is φ = 268512396.

The previous prime is 268512383. The next prime is 268512401. The reversal of 268512397 is 793215862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 255072841 + 13439556 = 15971^2 + 3666^2 .

It is a cyclic number.

It is not a de Polignac number, because 268512397 - 219 = 267988109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268512337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134256198 + 134256199.

It is an arithmetic number, because the mean of its divisors is an integer number (134256199).

Almost surely, 2268512397 is an apocalyptic number.

It is an amenable number.

268512397 is a deficient number, since it is larger than the sum of its proper divisors (1).

268512397 is an equidigital number, since it uses as much as digits as its factorization.

268512397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 43.

The square root of 268512397 is about 16386.3478847484. The cubic root of 268512397 is about 645.1412041872.

The spelling of 268512397 in words is "two hundred sixty-eight million, five hundred twelve thousand, three hundred ninety-seven".