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518129213 = 7174354027
BaseRepresentation
bin11110111000100…
…000011000111101
31100002221200122212
4132320200120331
52030120113323
6123225150205
715561011540
oct3670403075
91302850585
10518129213
1124651a168
1212562b365
1383461b44
144cb54857
1530749b78
hex1ee2063d

518129213 has 8 divisors (see below), whose sum is σ = 626980032. Its totient is φ = 417986496.

The previous prime is 518129207. The next prime is 518129233. The reversal of 518129213 is 312921815.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 518129213 - 24 = 518129197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 518129213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518129233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2176895 + ... + 2177132.

It is an arithmetic number, because the mean of its divisors is an integer number (78372504).

Almost surely, 2518129213 is an apocalyptic number.

It is an amenable number.

518129213 is a deficient number, since it is larger than the sum of its proper divisors (108850819).

518129213 is a wasteful number, since it uses less digits than its factorization.

518129213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4354051.

The product of its digits is 4320, while the sum is 32.

The square root of 518129213 is about 22762.4518231231. The cubic root of 518129213 is about 803.1796440243.

The spelling of 518129213 in words is "five hundred eighteen million, one hundred twenty-nine thousand, two hundred thirteen".

Divisors: 1 7 17 119 4354027 30478189 74018459 518129213