Base | Representation |
---|---|
bin | 111101010001111… |
… | …110000010001110 |
3 | 2122122120221111010 |
4 | 331101332002032 |
5 | 4101144330333 |
6 | 250004110050 |
7 | 34322611332 |
oct | 7521760216 |
9 | 2578527433 |
10 | 1028120718 |
11 | 488390349 |
12 | 248395326 |
13 | 135004971 |
14 | 9a78b7c2 |
15 | 603d8563 |
hex | 3d47e08e |
1028120718 has 16 divisors (see below), whose sum is σ = 2089951056. Its totient is φ = 337088640.
The previous prime is 1028120699. The next prime is 1028120719. The reversal of 1028120718 is 8170218201.
It is a happy number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1028120719) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1404171 + ... + 1404902.
It is an arithmetic number, because the mean of its divisors is an integer number (130621941).
Almost surely, 21028120718 is an apocalyptic number.
1028120718 is an abundant number, since it is smaller than the sum of its proper divisors (1061830338).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1028120718 is a wasteful number, since it uses less digits than its factorization.
1028120718 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2809139.
The product of its (nonzero) digits is 1792, while the sum is 30.
The square root of 1028120718 is about 32064.3215739862. The cubic root of 1028120718 is about 1009.2870562518.
Adding to 1028120718 its reverse (8170218201), we get a palindrome (9198338919).
The spelling of 1028120718 in words is "one billion, twenty-eight million, one hundred twenty thousand, seven hundred eighteen".
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