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518808072 = 233194326459
BaseRepresentation
bin11110111011000…
…110001000001000
31100011020011212210
4132323012020020
52030303324242
6123251505120
715566536656
oct3673061010
91304204783
10518808072
11246943202
121258b81a0
138363bb33
144cc8ddd6
1530830d9c
hex1eec6208

518808072 has 64 divisors (see below), whose sum is σ = 1397088000. Its totient is φ = 160017984.

The previous prime is 518808047. The next prime is 518808097. The reversal of 518808072 is 270808815.

It is an interprime number because it is at equal distance from previous prime (518808047) and next prime (518808097).

It is a self number, because there is not a number n which added to its sum of digits gives 518808072.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6379 + ... + 32837.

It is an arithmetic number, because the mean of its divisors is an integer number (21829500).

Almost surely, 2518808072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 518808072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (698544000).

518808072 is an abundant number, since it is smaller than the sum of its proper divisors (878279928).

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

518808072 is a wasteful number, since it uses less digits than its factorization.

518808072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26530 (or 26526 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 39.

The square root of 518808072 is about 22777.3587582055. The cubic root of 518808072 is about 803.5302694155.

The spelling of 518808072 in words is "five hundred eighteen million, eight hundred eight thousand, seventy-two".

Divisors: 1 2 3 4 6 8 12 19 24 38 43 57 76 86 114 129 152 172 228 258 344 456 516 817 1032 1634 2451 3268 4902 6536 9804 19608 26459 52918 79377 105836 158754 211672 317508 502721 635016 1005442 1137737 1508163 2010884 2275474 3016326 3413211 4021768 4550948 6032652 6826422 9101896 12065304 13652844 21617003 27305688 43234006 64851009 86468012 129702018 172936024 259404036 518808072