Base | Representation |
---|---|
bin | 111101010010101… |
… | …010011111101001 |
3 | 2122122221012021211 |
4 | 331102222133221 |
5 | 4101221142300 |
6 | 250012033121 |
7 | 34324300264 |
oct | 7522523751 |
9 | 2578835254 |
10 | 1028302825 |
11 | 4884a5150 |
12 | 2484627a1 |
13 | 135069814 |
14 | 9a7d7cdb |
15 | 604224ba |
hex | 3d4aa7e9 |
1028302825 has 24 divisors (see below), whose sum is σ = 1403365536. Its totient is φ = 741216000.
The previous prime is 1028302823. The next prime is 1028302841. The reversal of 1028302825 is 5282038201.
It is not a de Polignac number, because 1028302825 - 21 = 1028302823 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (1028302823) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14530 + ... + 47620.
It is an arithmetic number, because the mean of its divisors is an integer number (58473564).
Almost surely, 21028302825 is an apocalyptic number.
It is an amenable number.
1028302825 is a deficient number, since it is larger than the sum of its proper divisors (375062711).
1028302825 is a wasteful number, since it uses less digits than its factorization.
1028302825 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 33225 (or 33220 counting only the distinct ones).
The product of its (nonzero) digits is 7680, while the sum is 31.
The square root of 1028302825 is about 32067.1611621609. The cubic root of 1028302825 is about 1009.3466430895.
The spelling of 1028302825 in words is "one billion, twenty-eight million, three hundred two thousand, eight hundred twenty-five".
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