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268468223 = 1591316871
BaseRepresentation
bin10000000000000…
…111111111111111
3200201011121011112
4100000013333333
51022211440343
642350112235
76436641122
oct2000077777
9621147145
10268468223
111285a8171
1275aab67b
134380a84a
14279263b9
1518881218
hex10007fff

268468223 has 4 divisors (see below), whose sum is σ = 268501008. Its totient is φ = 268435440.

The previous prime is 268468219. The next prime is 268468229. The reversal of 268468223 is 322864862.

It can be divided in two parts, 2684 and 68223, that added together give a palindrome (70907).

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 322864862 = 2161432431.

It is a cyclic number.

It is not a de Polignac number, because 268468223 - 22 = 268468219 is a prime.

It is a Kynea number, being equal to (214 + 1)2 - 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268468229) 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, 7478 + ... + 24348.

It is an arithmetic number, because the mean of its divisors is an integer number (67125252).

Almost surely, 2268468223 is an apocalyptic number.

268468223 is a deficient number, since it is larger than the sum of its proper divisors (32785).

268468223 is a wasteful number, since it uses less digits than its factorization.

268468223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32784.

The product of its digits is 221184, while the sum is 41.

The square root of 268468223 is about 16384.9999389686. Note that the first 4 decimals coincide. The cubic root of 268468223 is about 645.1058240324.

The spelling of 268468223 in words is "two hundred sixty-eight million, four hundred sixty-eight thousand, two hundred twenty-three".

Divisors: 1 15913 16871 268468223