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268318397 = 2341114617
BaseRepresentation
bin11111111111000…
…11011010111101
3200200212222122102
433333203122331
51022142142042
642342554445
76435445244
oct1777433275
9620788572
10268318397
11128505646
1275a38a25
13437875a9
14278c795b
1518851b32
hexffe36bd

268318397 has 4 divisors (see below), whose sum is σ = 268435356. Its totient is φ = 268201440.

The previous prime is 268318363. The next prime is 268318403. The reversal of 268318397 is 793813862.

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

It can be written as a sum of positive squares in 2 ways, for example, as 138039001 + 130279396 = 11749^2 + 11414^2 .

It is a cyclic number.

It is not a de Polignac number, because 268318397 - 218 = 268056253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268312397) 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, 54968 + ... + 59649.

It is an arithmetic number, because the mean of its divisors is an integer number (67108839).

Almost surely, 2268318397 is an apocalyptic number.

It is an amenable number.

268318397 is a deficient number, since it is larger than the sum of its proper divisors (116959).

268318397 is a wasteful number, since it uses less digits than its factorization.

268318397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116958.

The product of its digits is 435456, while the sum is 47.

The square root of 268318397 is about 16380.4272532801. The cubic root of 268318397 is about 644.9857954126.

The spelling of 268318397 in words is "two hundred sixty-eight million, three hundred eighteen thousand, three hundred ninety-seven".

Divisors: 1 2341 114617 268318397