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28578579134 = 272970390589
BaseRepresentation
bin11010100111011010…
…101000001010111110
32201202200122020111212
4122213122220022332
5432012104013014
621043454044422
72031126625460
oct324732501276
981680566455
1028578579134
1111135954546
125656aa9712
132905a56571
14155175c130
15b23e5223e
hex6a76a82be

28578579134 has 16 divisors (see below), whose sum is σ = 50681224800. Its totient is φ = 11825618784.

The previous prime is 28578579103. The next prime is 28578579143. The reversal of 28578579134 is 43197587582.

It is a super-3 number, since 3×285785791343 (a number of 32 digits) contains 333 as substring.

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, 35194889 + ... + 35195700.

It is an arithmetic number, because the mean of its divisors is an integer number (3167576550).

Almost surely, 228578579134 is an apocalyptic number.

28578579134 is a deficient number, since it is larger than the sum of its proper divisors (22102645666).

28578579134 is a wasteful number, since it uses less digits than its factorization.

28578579134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70390627.

The product of its digits is 16934400, while the sum is 59.

The spelling of 28578579134 in words is "twenty-eight billion, five hundred seventy-eight million, five hundred seventy-nine thousand, one hundred thirty-four".

Divisors: 1 2 7 14 29 58 203 406 70390589 140781178 492734123 985468246 2041327081 4082654162 14289289567 28578579134