Base | Representation |
---|---|
bin | 101000100011111110… |
… | …1111001111100111000 |
3 | 22022211121201201001021 |
4 | 1101013331321330320 |
5 | 2411343312201113 |
6 | 104003304032224 |
7 | 6202405133020 |
oct | 1210775717470 |
9 | 268747651037 |
10 | 87106756408 |
11 | 33a3a547391 |
12 | 14a6ba62674 |
13 | 82a25a8919 |
14 | 4304964a80 |
15 | 23ec37448d |
hex | 1447f79f38 |
87106756408 has 64 divisors (see below), whose sum is σ = 192899174400. Its totient is φ = 36085858560.
The previous prime is 87106756381. The next prime is 87106756423. The reversal of 87106756408 is 80465760178.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1511548 + ... + 1568116.
It is an arithmetic number, because the mean of its divisors is an integer number (3014049600).
Almost surely, 287106756408 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 87106756408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96449587200).
87106756408 is an abundant number, since it is smaller than the sum of its proper divisors (105792417992).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
87106756408 is a wasteful number, since it uses less digits than its factorization.
87106756408 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 57500 (or 57496 counting only the distinct ones).
The product of its (nonzero) digits is 2257920, while the sum is 52.
The spelling of 87106756408 in words is "eighty-seven billion, one hundred six million, seven hundred fifty-six thousand, four hundred eight".
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