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28667608486 = 2111319947123
BaseRepresentation
bin11010101100101110…
…001111110110100110
32201222220011101211021
4122230232033312212
5432202401432421
621100354201354
72033260436326
oct325456176646
981886141737
1028667608486
1111181132620
12568088325a
13291b32875a
14155d4d5286
15b2bb8b341
hex6acb8fda6

28667608486 has 16 divisors (see below), whose sum is σ = 47268733248. Its totient is φ = 12931258600.

The previous prime is 28667608477. The next prime is 28667608511. The reversal of 28667608486 is 68480676682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4970680 + ... + 4976443.

It is an arithmetic number, because the mean of its divisors is an integer number (2954295828).

Almost surely, 228667608486 is an apocalyptic number.

28667608486 is a deficient number, since it is larger than the sum of its proper divisors (18601124762).

28667608486 is a wasteful number, since it uses less digits than its factorization.

28667608486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9947267.

The product of its (nonzero) digits is 37158912, while the sum is 61.

The spelling of 28667608486 in words is "twenty-eight billion, six hundred sixty-seven million, six hundred eight thousand, four hundred eighty-six".

Divisors: 1 2 11 22 131 262 1441 2882 9947123 19894246 109418353 218836706 1303073113 2606146226 14333804243 28667608486