Base | Representation |
---|---|
bin | 11010001011010101… |
… | …110000110001010000 |
3 | 2200112212022001110200 |
4 | 122023111300301100 |
5 | 430031012312314 |
6 | 20525030055200 |
7 | 2013350106243 |
oct | 321325606120 |
9 | 80485261420 |
10 | 28107541584 |
11 | 10a13a7a011 |
12 | 55451aa500 |
13 | 285c2a2115 |
14 | 1508d8525a |
15 | ae790a709 |
hex | 68b570c50 |
28107541584 has 60 divisors (see below), whose sum is σ = 78747126900. Its totient is φ = 9359050752.
The previous prime is 28107541577. The next prime is 28107541589. The reversal of 28107541584 is 48514570182.
28107541584 is a `hidden beast` number, since 2 + 8 + 10 + 7 + 54 + 1 + 584 = 666.
It can be written as a sum of positive squares in 2 ways, for example, as 11713299984 + 16394241600 = 108228^2 + 128040^2 .
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (28107541589) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28722 + ... + 238830.
It is an arithmetic number, because the mean of its divisors is an integer number (1312452115).
Almost surely, 228107541584 is an apocalyptic number.
28107541584 is a gapful number since it is divisible by the number (24) formed by its first and last digit.
It is an amenable number.
28107541584 is an abundant number, since it is smaller than the sum of its proper divisors (50639585316).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28107541584 is a wasteful number, since it uses less digits than its factorization.
28107541584 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 211052 (or 211043 counting only the distinct ones).
The product of its (nonzero) digits is 358400, while the sum is 45.
The spelling of 28107541584 in words is "twenty-eight billion, one hundred seven million, five hundred forty-one thousand, five hundred eighty-four".
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