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268312184 = 23722721107
BaseRepresentation
bin11111111111000…
…01111001111000
3200200212200010022
433333201321320
51022141442214
642342510012
76435421160
oct1777417170
9620780108
10268312184
11128500a08
1275a35308
134378480a
14278c55a0
151884ed8e
hexffe1e78

268312184 has 32 divisors (see below), whose sum is σ = 577514880. Its totient is φ = 114478944.

The previous prime is 268312183. The next prime is 268312189. The reversal of 268312184 is 481213862.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268312183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2159 + ... + 23265.

It is an arithmetic number, because the mean of its divisors is an integer number (18047340).

Almost surely, 2268312184 is an apocalyptic number.

It is an amenable number.

268312184 is an abundant number, since it is smaller than the sum of its proper divisors (309202696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

268312184 is a wasteful number, since it uses less digits than its factorization.

268312184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21347 (or 21343 counting only the distinct ones).

The product of its digits is 18432, while the sum is 35.

The square root of 268312184 is about 16380.2376051143. The cubic root of 268312184 is about 644.9808170887.

The spelling of 268312184 in words is "two hundred sixty-eight million, three hundred twelve thousand, one hundred eighty-four".

Divisors: 1 2 4 7 8 14 28 56 227 454 908 1589 1816 3178 6356 12712 21107 42214 84428 147749 168856 295498 590996 1181992 4791289 9582578 19165156 33539023 38330312 67078046 134156092 268312184