Base | Representation |
---|---|
bin | 1101010000111011… |
… | …11011100011110000 |
3 | 200101022010212200101 |
4 | 12220131323203300 |
5 | 104041033320322 |
6 | 3134352002144 |
7 | 341321531320 |
oct | 65035734360 |
9 | 20338125611 |
10 | 7121385712 |
11 | 3024922541 |
12 | 1468b30354 |
13 | 8964c67cc |
14 | 4b7b17280 |
15 | 2ba2e5327 |
hex | 1a877b8f0 |
7121385712 has 40 divisors (see below), whose sum is σ = 15772824800. Its totient is φ = 3051240192.
The previous prime is 7121385707. The next prime is 7121385737. The reversal of 7121385712 is 2175831217.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 719614 + ... + 729442.
It is an arithmetic number, because the mean of its divisors is an integer number (394320620).
Almost surely, 27121385712 is an apocalyptic number.
It is an amenable number.
7121385712 is an abundant number, since it is smaller than the sum of its proper divisors (8651439088).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
7121385712 is a wasteful number, since it uses less digits than its factorization.
7121385712 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 16313 (or 16307 counting only the distinct ones).
The product of its digits is 23520, while the sum is 37.
The square root of 7121385712 is about 84388.3031705224. The cubic root of 7121385712 is about 1923.9251400458.
The spelling of 7121385712 in words is "seven billion, one hundred twenty-one million, three hundred eighty-five thousand, seven hundred twelve".
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