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28571083134 = 2311289442181
BaseRepresentation
bin11010100110111110…
…000010000101111110
32201202011112101221020
4122212332002011332
5432003144130014
621043025245010
72031006125316
oct324676020576
981664471836
1028571083134
11111316a4700
125654493766
132904330669
14155076a446
15b234711a9
hex6a6f8217e

28571083134 has 48 divisors (see below), whose sum is σ = 63515022480. Its totient is φ = 8560604800.

The previous prime is 28571083129. The next prime is 28571083157. The reversal of 28571083134 is 43138017582.

It is a Curzon number.

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 23 ways as a sum of consecutive naturals, for example, 156477 + ... + 285704.

It is an arithmetic number, because the mean of its divisors is an integer number (1323229635).

Almost surely, 228571083134 is an apocalyptic number.

28571083134 is an abundant number, since it is smaller than the sum of its proper divisors (34943939346).

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

28571083134 is a wasteful number, since it uses less digits than its factorization.

28571083134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442297 (or 442286 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 28571083134 in words is "twenty-eight billion, five hundred seventy-one million, eighty-three thousand, one hundred thirty-four".

Divisors: 1 2 3 6 11 22 33 66 89 121 178 242 267 363 534 726 979 1958 2937 5874 10769 21538 32307 64614 442181 884362 1326543 2653086 4863991 9727982 14591973 29183946 39354109 53503901 78708218 107007802 118062327 160511703 236124654 321023406 432895199 865790398 1298685597 2597371194 4761847189 9523694378 14285541567 28571083134