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268132871 = 1791497949
BaseRepresentation
bin11111111101101…
…10001000000111
3200200112120011002
433332312020013
51022120222441
642335003515
76434043326
oct1776661007
9620476132
10268132871
11128399216
127596959b
1343721006
142787a0bd
1518816b9b
hexffb6207

268132871 has 4 divisors (see below), whose sum is σ = 269631000. Its totient is φ = 266634744.

The previous prime is 268132847. The next prime is 268132877. The reversal of 268132871 is 178231862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 178231862 = 289115931.

It is a cyclic number.

It is not a de Polignac number, because 268132871 - 214 = 268116487 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 (268132877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 748796 + ... + 749153.

It is an arithmetic number, because the mean of its divisors is an integer number (67407750).

Almost surely, 2268132871 is an apocalyptic number.

268132871 is a deficient number, since it is larger than the sum of its proper divisors (1498129).

268132871 is a wasteful number, since it uses less digits than its factorization.

268132871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498128.

The product of its digits is 32256, while the sum is 38.

The square root of 268132871 is about 16374.7632349295. The cubic root of 268132871 is about 644.8371048690.

The spelling of 268132871 in words is "two hundred sixty-eight million, one hundred thirty-two thousand, eight hundred seventy-one".

Divisors: 1 179 1497949 268132871