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268669871 = 17910331453
BaseRepresentation
bin10000000000111…
…001001110101111
3200201112211202222
4100000321032233
51022234413441
642354305555
76441441041
oct2000711657
9621484688
10268669871
11128725718
1275b882bb
134387b572
1427979a91
15188c0d4b
hex100393af

268669871 has 8 divisors (see below), whose sum is σ = 270618480. Its totient is φ = 266726592.

The previous prime is 268669859. The next prime is 268669883. The reversal of 268669871 is 178966862.

It is an interprime number because it is at equal distance from previous prime (268669859) and next prime (268669883).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-268669871 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 (268669571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184181 + ... + 185633.

It is an arithmetic number, because the mean of its divisors is an integer number (33827310).

Almost surely, 2268669871 is an apocalyptic number.

268669871 is a deficient number, since it is larger than the sum of its proper divisors (1948609).

268669871 is a wasteful number, since it uses less digits than its factorization.

268669871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2665.

The product of its digits is 1741824, while the sum is 53.

The square root of 268669871 is about 16391.1522169736. The cubic root of 268669871 is about 645.2672978217.

The spelling of 268669871 in words is "two hundred sixty-eight million, six hundred sixty-nine thousand, eight hundred seventy-one".

Divisors: 1 179 1033 1453 184907 260087 1500949 268669871