Base | Representation |
---|---|
bin | 110000001010010… |
… | …001110110011000 |
3 | 2002022101200220000 |
4 | 300022101312120 |
5 | 3123322012140 |
6 | 212102133000 |
7 | 26010615546 |
oct | 6012216630 |
9 | 2068350800 |
10 | 808000920 |
11 | 385106061 |
12 | 1a6721160 |
13 | cb52486c |
14 | 7944cd96 |
15 | 4ae07a30 |
hex | 30291d98 |
808000920 has 80 divisors (see below), whose sum is σ = 2715791760. Its totient is φ = 215466048.
The previous prime is 808000903. The next prime is 808000927. The reversal of 808000920 is 29000808.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (808000927) by changing a digit.
It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 121452 + ... + 127931.
It is an arithmetic number, because the mean of its divisors is an integer number (33947397).
Almost surely, 2808000920 is an apocalyptic number.
It is an amenable number.
808000920 is an abundant number, since it is smaller than the sum of its proper divisors (1907790840).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
808000920 is a wasteful number, since it uses less digits than its factorization.
808000920 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 249406 (or 249393 counting only the distinct ones).
The product of its (nonzero) digits is 1152, while the sum is 27.
The square root of 808000920 is about 28425.3569898427. The cubic root of 808000920 is about 931.4022550630.
The spelling of 808000920 in words is "eight hundred eight million, nine hundred twenty", and thus it is an aban number.
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