Base | Representation |
---|---|
bin | 1010100101000111… |
… | …1011010101011100 |
3 | 21022221001102210120 |
4 | 2221101323111130 |
5 | 21304023031423 |
6 | 1145452034540 |
7 | 130244006130 |
oct | 25121732534 |
9 | 7287042716 |
10 | 2840048988 |
11 | 1228151927 |
12 | 673162a50 |
13 | 36351017a |
14 | 1cd28b3c0 |
15 | 1194eaee3 |
hex | a947b55c |
2840048988 has 48 divisors (see below), whose sum is σ = 7621737984. Its totient is φ = 806270400.
The previous prime is 2840048987. The next prime is 2840049011. The reversal of 2840048988 is 8898400482.
It is a self number, because there is not a number n which added to its sum of digits gives 2840048988.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2840048987) 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 15 ways as a sum of consecutive naturals, for example, 94488 + ... + 120863.
It is an arithmetic number, because the mean of its divisors is an integer number (158786208).
Almost surely, 22840048988 is an apocalyptic number.
2840048988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.
It is an amenable number.
2840048988 is an abundant number, since it is smaller than the sum of its proper divisors (4781688996).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2840048988 is a wasteful number, since it uses less digits than its factorization.
2840048988 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 215522 (or 215520 counting only the distinct ones).
The product of its (nonzero) digits is 1179648, while the sum is 51.
The square root of 2840048988 is about 53292.1099976347. The cubic root of 2840048988 is about 1416.1478926413.
The spelling of 2840048988 in words is "two billion, eight hundred forty million, forty-eight thousand, nine hundred eighty-eight".
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