Base | Representation |
---|---|
bin | 101010100100110… |
… | …1000001010000111 |
3 | 10200120010202010221 |
4 | 1111021220022013 |
5 | 10411204242033 |
6 | 353431325211 |
7 | 50254535044 |
oct | 12511501207 |
9 | 3616122127 |
10 | 1428587143 |
11 | 673444735 |
12 | 33a520807 |
13 | 199c7a649 |
14 | d7a341cb |
15 | 8564012d |
hex | 55268287 |
1428587143 has 8 divisors (see below), whose sum is σ = 1504166400. Its totient is φ = 1353046968.
The previous prime is 1428587141. The next prime is 1428587159. The reversal of 1428587143 is 3417858241.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 1428587143 - 21 = 1428587141 is a prime.
It is a super-2 number, since 2×14285871432 = 4081722450289804898, which contains 22 as substring.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 1428587143.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1428587141) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93180 + ... + 107422.
It is an arithmetic number, because the mean of its divisors is an integer number (188020800).
Almost surely, 21428587143 is an apocalyptic number.
1428587143 is a deficient number, since it is larger than the sum of its proper divisors (75579257).
1428587143 is a wasteful number, since it uses less digits than its factorization.
1428587143 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 19541.
The product of its digits is 215040, while the sum is 43.
The square root of 1428587143 is about 37796.6551827010. The cubic root of 1428587143 is about 1126.2520100416.
The spelling of 1428587143 in words is "one billion, four hundred twenty-eight million, five hundred eighty-seven thousand, one hundred forty-three".
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