Base | Representation |
---|---|
bin | 100101101000001011… |
… | …1110011011111111000 |
3 | 21201120110110012002000 |
4 | 1023100113303133320 |
5 | 2310442130000004 |
6 | 101042122141000 |
7 | 5560300552320 |
oct | 1132027633770 |
9 | 251513405060 |
10 | 80805312504 |
11 | 312a6546304 |
12 | 137b1651760 |
13 | 7809c27aa7 |
14 | 3ca7ac8280 |
15 | 217e044c39 |
hex | 12d05f37f8 |
80805312504 has 128 divisors (see below), whose sum is σ = 264799948800. Its totient is φ = 22342469760.
The previous prime is 80805312487. The next prime is 80805312593. The reversal of 80805312504 is 40521350808.
It is a happy number.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 815107 + ... + 908850.
It is an arithmetic number, because the mean of its divisors is an integer number (2068749600).
Almost surely, 280805312504 is an apocalyptic number.
80805312504 is a gapful number since it is divisible by the number (84) formed by its first and last digit.
It is an amenable number.
80805312504 is an abundant number, since it is smaller than the sum of its proper divisors (183994636296).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80805312504 is a wasteful number, since it uses less digits than its factorization.
80805312504 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1724010 (or 1724000 counting only the distinct ones).
The product of its (nonzero) digits is 38400, while the sum is 36.
The spelling of 80805312504 in words is "eighty billion, eight hundred five million, three hundred twelve thousand, five hundred four".
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