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268879375 = 54676421
BaseRepresentation
bin10000000001101…
…100011000001111
3200201221111011101
4100001230120033
51022313120000
642403003531
76443302612
oct2001543017
9621844141
10268879375
11128859066
12760695a7
1343922a2b
14279d2179
1518912e6a
hex1006c60f

268879375 has 20 divisors (see below), whose sum is σ = 341059576. Its totient is φ = 211860000.

The previous prime is 268879349. The next prime is 268879381. The reversal of 268879375 is 573978862.

It is not a de Polignac number, because 268879375 - 215 = 268846607 is a prime.

It is a super-2 number, since 2×2688793752 = 144592236600781250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 38665 + ... + 45085.

Almost surely, 2268879375 is an apocalyptic number.

268879375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

268879375 is a deficient number, since it is larger than the sum of its proper divisors (72180201).

268879375 is an frugal number, since it uses more digits than its factorization.

268879375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6508 (or 6493 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 55.

The square root of 268879375 is about 16397.5417364921. The cubic root of 268879375 is about 645.4349769094.

The spelling of 268879375 in words is "two hundred sixty-eight million, eight hundred seventy-nine thousand, three hundred seventy-five".

Divisors: 1 5 25 67 125 335 625 1675 6421 8375 32105 41875 160525 430207 802625 2151035 4013125 10755175 53775875 268879375