Base | Representation |
---|---|
bin | 1010110100110101… |
… | …1101101001100000 |
3 | 21111112010110200100 |
4 | 2231031131221200 |
5 | 21422413101210 |
6 | 1200205222400 |
7 | 132004326201 |
oct | 25515355140 |
9 | 7445113610 |
10 | 2905987680 |
11 | 1261399612 |
12 | 691261a00 |
13 | 37408924b |
14 | 1d7d335a8 |
15 | 1201c35c0 |
hex | ad35da60 |
2905987680 has 144 divisors (see below), whose sum is σ = 10438711920. Its totient is φ = 734137344.
The previous prime is 2905987673. The next prime is 2905987681. The reversal of 2905987680 is 867895092.
It is a happy number.
2905987680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a tau number, because it is divible by the number of its divisors (144).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2905987681) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25747 + ... + 80466.
It is an arithmetic number, because the mean of its divisors is an integer number (72491055).
Almost surely, 22905987680 is an apocalyptic number.
2905987680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
2905987680 is an abundant number, since it is smaller than the sum of its proper divisors (7532724240).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2905987680 is a wasteful number, since it uses less digits than its factorization.
2905987680 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 106253 (or 106242 counting only the distinct ones).
The product of its (nonzero) digits is 2177280, while the sum is 54.
The square root of 2905987680 is about 53907.2136174742. The cubic root of 2905987680 is about 1427.0239310623.
The spelling of 2905987680 in words is "two billion, nine hundred five million, nine hundred eighty-seven thousand, six hundred eighty".
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