Base | Representation |
---|---|
bin | 100110010010101… |
… | …1011100001101000 |
3 | 10022112201200200020 |
4 | 1030211123201220 |
5 | 10112412133423 |
6 | 331255240440 |
7 | 43561206153 |
oct | 11445334150 |
9 | 3275650606 |
10 | 1284880488 |
11 | 5aa310801 |
12 | 2ba379120 |
13 | 176273118 |
14 | c2906c9a |
15 | 77c054e3 |
hex | 4c95b868 |
1284880488 has 32 divisors (see below), whose sum is σ = 3236729760. Its totient is φ = 425023040.
The previous prime is 1284880483. The next prime is 1284880511. The reversal of 1284880488 is 8840884821.
It is a self number, because there is not a number n which added to its sum of digits gives 1284880488.
It is not an unprimeable number, because it can be changed into a prime (1284880483) 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, 201195 + ... + 207482.
It is an arithmetic number, because the mean of its divisors is an integer number (101147805).
Almost surely, 21284880488 is an apocalyptic number.
It is an amenable number.
1284880488 is an abundant number, since it is smaller than the sum of its proper divisors (1951849272).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1284880488 is a wasteful number, since it uses less digits than its factorization.
1284880488 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 408817 (or 408813 counting only the distinct ones).
The product of its (nonzero) digits is 1048576, while the sum is 51.
The square root of 1284880488 is about 35845.2296407765. The cubic root of 1284880488 is about 1087.1452633984.
The spelling of 1284880488 in words is "one billion, two hundred eighty-four million, eight hundred eighty thousand, four hundred eighty-eight".
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