Base | Representation |
---|---|
bin | 100101101010001000… |
… | …0110011001000101000 |
3 | 21201202000021100221010 |
4 | 1023110100303020220 |
5 | 2311110332203442 |
6 | 101052413143520 |
7 | 5562022425630 |
oct | 1132420631050 |
9 | 251660240833 |
10 | 80870584872 |
11 | 3132a378410 |
12 | 1380b48aba0 |
13 | 781a5cc7ac |
14 | 3cb26396c0 |
15 | 2184b39b9c |
hex | 12d4433228 |
80870584872 has 256 divisors, whose sum is σ = 254405836800. Its totient is φ = 20811329280.
The previous prime is 80870584843. The next prime is 80870584889. The reversal of 80870584872 is 27848507808.
It is an unprimeable number.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 124992853 + ... + 124993499.
It is an arithmetic number, because the mean of its divisors is an integer number (993772800).
Almost surely, 280870584872 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 80870584872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127202918400).
80870584872 is an abundant number, since it is smaller than the sum of its proper divisors (173535251928).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80870584872 is a wasteful number, since it uses less digits than its factorization.
80870584872 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1196 (or 1192 counting only the distinct ones).
The product of its (nonzero) digits is 8028160, while the sum is 57.
The spelling of 80870584872 in words is "eighty billion, eight hundred seventy million, five hundred eighty-four thousand, eight hundred seventy-two".
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