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223867868 = 2273163169
BaseRepresentation
bin11010101011111…
…11001111011100
3120121020122222112
431111333033130
5424302232433
634114133152
75355563000
oct1525771734
9517218875
10223867868
11105405274
1262b811b8
13374c30c3
1421a36700
15149c1348
hexd57f3dc

223867868 has 24 divisors (see below), whose sum is σ = 456876000. Its totient is φ = 95942784.

The previous prime is 223867829. The next prime is 223867877. The reversal of 223867868 is 868768322.

It is a congruent number.

It is an unprimeable number.

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, 80213 + ... + 82956.

It is an arithmetic number, because the mean of its divisors is an integer number (19036500).

Almost surely, 2223867868 is an apocalyptic number.

223867868 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

223867868 is an abundant number, since it is smaller than the sum of its proper divisors (233008132).

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

223867868 is a wasteful number, since it uses less digits than its factorization.

223867868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163194 (or 163178 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 50.

The square root of 223867868 is about 14962.2146756421. The cubic root of 223867868 is about 607.1983570264.

The spelling of 223867868 in words is "two hundred twenty-three million, eight hundred sixty-seven thousand, eight hundred sixty-eight".

Divisors: 1 2 4 7 14 28 49 98 196 343 686 1372 163169 326338 652676 1142183 2284366 4568732 7995281 15990562 31981124 55966967 111933934 223867868