Base | Representation |
---|---|
bin | 111101010010111… |
… | …110100111000110 |
3 | 2122200002101022120 |
4 | 331102332213012 |
5 | 4101231311342 |
6 | 250013510410 |
7 | 34325062434 |
oct | 7522764706 |
9 | 2580071276 |
10 | 1028385222 |
11 | 488551047 |
12 | 2484a2406 |
13 | 135098187 |
14 | 9a819d54 |
15 | 6043baec |
hex | 3d4be9c6 |
1028385222 has 32 divisors (see below), whose sum is σ = 2201731200. Its totient is φ = 319246848.
The previous prime is 1028385221. The next prime is 1028385263. The reversal of 1028385222 is 2225838201.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1028385221) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69723 + ... + 83174.
It is an arithmetic number, because the mean of its divisors is an integer number (68804100).
Almost surely, 21028385222 is an apocalyptic number.
1028385222 is an abundant number, since it is smaller than the sum of its proper divisors (1173345978).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1028385222 is a wasteful number, since it uses less digits than its factorization.
1028385222 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 152980.
The product of its (nonzero) digits is 15360, while the sum is 33.
The square root of 1028385222 is about 32068.4458931205. The cubic root of 1028385222 is about 1009.3736017221.
The spelling of 1028385222 in words is "one billion, twenty-eight million, three hundred eighty-five thousand, two hundred twenty-two".
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