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6988520084 = 2271319199231
BaseRepresentation
bin1101000001000110…
…00101101010010100
3200001001010121022012
412200203011222110
5103303030120314
63113244123352
7335116304060
oct64043055224
920031117265
106988520084
112a66923637
121430536558
13874b168b0
144a420caa0
152ad7ec93e
hex1a08c5a94

6988520084 has 24 divisors (see below), whose sum is σ = 15052197888. Its totient is φ = 2764689120.

The previous prime is 6988520051. The next prime is 6988520107. The reversal of 6988520084 is 4800258896.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 9599252 + ... + 9599979.

It is an arithmetic number, because the mean of its divisors is an integer number (627174912).

Almost surely, 26988520084 is an apocalyptic number.

It is an amenable number.

6988520084 is an abundant number, since it is smaller than the sum of its proper divisors (8063677804).

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

6988520084 is a wasteful number, since it uses less digits than its factorization.

6988520084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19199255 (or 19199253 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 50.

The square root of 6988520084 is about 83597.3688820408. The cubic root of 6988520084 is about 1911.8848825290.

The spelling of 6988520084 in words is "six billion, nine hundred eighty-eight million, five hundred twenty thousand, eighty-four".

Divisors: 1 2 4 7 13 14 26 28 52 91 182 364 19199231 38398462 76796924 134394617 249590003 268789234 499180006 537578468 998360012 1747130021 3494260042 6988520084