Base | Representation |
---|---|
bin | 1100110010110111… |
… | …01000011101111110 |
3 | 122201201110201000200 |
4 | 12121123220131332 |
5 | 103031443444430 |
6 | 3053341104330 |
7 | 332136412320 |
oct | 63133503576 |
9 | 18651421020 |
10 | 6869124990 |
11 | 2a05495302 |
12 | 13b85580a6 |
13 | 856172100 |
14 | 49240d610 |
15 | 2a30b6460 |
hex | 1996e877e |
6869124990 has 288 divisors, whose sum is σ = 22301697600. Its totient is φ = 1436258304.
The previous prime is 6869124989. The next prime is 6869125001. The reversal of 6869124990 is 994219686.
6869124990 is a `hidden beast` number, since 68 + 6 + 91 + 2 + 499 + 0 = 666.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 15863814 + ... + 15864246.
It is an arithmetic number, because the mean of its divisors is an integer number (77436450).
Almost surely, 26869124990 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 6869124990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11150848800).
6869124990 is an abundant number, since it is smaller than the sum of its proper divisors (15432572610).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
6869124990 is a wasteful number, since it uses less digits than its factorization.
6869124990 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 628 (or 612 counting only the distinct ones).
The product of its (nonzero) digits is 1679616, while the sum is 54.
The square root of 6869124990 is about 82880.1845437135. The cubic root of 6869124990 is about 1900.9344424785.
The spelling of 6869124990 in words is "six billion, eight hundred sixty-nine million, one hundred twenty-four thousand, nine hundred ninety".
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