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518247950 = 25211942269
BaseRepresentation
bin11110111000111…
…101011000001110
31100010011201112112
4132320331120032
52030132413300
6123231504022
715562014653
oct3670753016
91303151475
10518247950
112465a03a0
12125688012
13834a3bbc
144cb85c2a
153076ee35
hex1ee3d60e

518247950 has 24 divisors (see below), whose sum is σ = 1051573320. Its totient is φ = 188453600.

The previous prime is 518247949. The next prime is 518247959. The reversal of 518247950 is 59742815.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 518247898 and 518247907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518247959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 470585 + ... + 471684.

It is an arithmetic number, because the mean of its divisors is an integer number (43815555).

Almost surely, 2518247950 is an apocalyptic number.

518247950 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

518247950 is an abundant number, since it is smaller than the sum of its proper divisors (533325370).

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

518247950 is a wasteful number, since it uses less digits than its factorization.

518247950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942292 (or 942287 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 41.

The square root of 518247950 is about 22765.0598505692. The cubic root of 518247950 is about 803.2409928507.

The spelling of 518247950 in words is "five hundred eighteen million, two hundred forty-seven thousand, nine hundred fifty".

Divisors: 1 2 5 10 11 22 25 50 55 110 275 550 942269 1884538 4711345 9422690 10364959 20729918 23556725 47113450 51824795 103649590 259123975 518247950