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808420054 = 213238831531
BaseRepresentation
bin110000001011111…
…000001011010110
32002100011222211111
4300023320023112
53123423420204
6212115125234
726014312531
oct6013701326
92070158744
10808420054
11385371a52
121a68a381a
13cb640580
147951ba18
154ae8bd04
hex302f82d6

808420054 has 32 divisors (see below), whose sum is σ = 1365122304. Its totient is φ = 356257440.

The previous prime is 808420049. The next prime is 808420061. The reversal of 808420054 is 450024808.

It is a junction number, because it is equal to n+sod(n) for n = 808419998 and 808420025.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 527269 + ... + 528799.

It is an arithmetic number, because the mean of its divisors is an integer number (42660072).

Almost surely, 2808420054 is an apocalyptic number.

808420054 is a deficient number, since it is larger than the sum of its proper divisors (556702250).

808420054 is a wasteful number, since it uses less digits than its factorization.

808420054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452.

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 808420054 is about 28432.7285711379. The cubic root of 808420054 is about 931.5632758662.

The spelling of 808420054 in words is "eight hundred eight million, four hundred twenty thousand, fifty-four".

Divisors: 1 2 13 23 26 46 299 598 883 1531 1766 3062 11479 19903 20309 22958 35213 39806 40618 70426 264017 457769 528034 915538 1351873 2703746 17574349 31093079 35148698 62186158 404210027 808420054