| Base | Representation |
|---|---|
| bin | 111111110111101… |
| … | …0010011000111000 |
| 3 | 12112100121212222102 |
| 4 | 1333233102120320 |
| 5 | 13342113240040 |
| 6 | 552354042532 |
| 7 | 104052033206 |
| oct | 17757223070 |
| 9 | 5470555872 |
| 10 | 2143102520 |
| 11 | 9aa7a8709 |
| 12 | 4b9879448 |
| 13 | 281ccc900 |
| 14 | 1648aa076 |
| 15 | c822d515 |
| hex | 7fbd2638 |
2143102520 has 96 divisors (see below), whose sum is σ = 5288846400. Its totient is φ = 781088256.
The previous prime is 2143102477. The next prime is 2143102543. The reversal of 2143102520 is 252013412.
It is a super-2 number, since 2×21431025202 = 9185776822460700800, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (20).
It is a junction number, because it is equal to n+sod(n) for n = 2143102492 and 2143102501.
It is a congruent number.
It is an unprimeable number.
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 23 ways as a sum of consecutive naturals, for example, 532034 + ... + 536046.
It is an arithmetic number, because the mean of its divisors is an integer number (55092150).
Almost surely, 22143102520 is an apocalyptic number.
2143102520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 2143102520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2644423200).
2143102520 is an abundant number, since it is smaller than the sum of its proper divisors (3145743880).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2143102520 is a wasteful number, since it uses less digits than its factorization.
2143102520 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4129 (or 4112 counting only the distinct ones).
The product of its (nonzero) digits is 480, while the sum is 20.
The square root of 2143102520 is about 46293.6552888190. The cubic root of 2143102520 is about 1289.2811972096.
Adding to 2143102520 its reverse (252013412), we get a palindrome (2395115932).
The spelling of 2143102520 in words is "two billion, one hundred forty-three million, one hundred two thousand, five hundred twenty".
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