Base | Representation |
---|---|
bin | 11010000101110100… |
… | …111000110101011110 |
3 | 2200022102020101010020 |
4 | 122011310320311132 |
5 | 424333322202130 |
6 | 20511523253010 |
7 | 2011144615005 |
oct | 320564706536 |
9 | 80272211106 |
10 | 28015037790 |
11 | 109768385a3 |
12 | 551a21a166 |
13 | 284608464c |
14 | 14da985c3c |
15 | ade736e10 |
hex | 685d38d5e |
28015037790 has 16 divisors (see below), whose sum is σ = 67236090768. Its totient is φ = 7470676736.
The previous prime is 28015037773. The next prime is 28015037797. The reversal of 28015037790 is 9773051082.
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (28015037797) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 466917267 + ... + 466917326.
It is an arithmetic number, because the mean of its divisors is an integer number (4202255673).
Almost surely, 228015037790 is an apocalyptic number.
28015037790 is an abundant number, since it is smaller than the sum of its proper divisors (39221052978).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28015037790 is a wasteful number, since it uses less digits than its factorization.
28015037790 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 933834603.
The product of its (nonzero) digits is 105840, while the sum is 42.
The spelling of 28015037790 in words is "twenty-eight billion, fifteen million, thirty-seven thousand, seven hundred ninety".
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