Base | Representation |
---|---|
bin | 101000101101010100… |
… | …0111010100000001100 |
3 | 22100122110012011221020 |
4 | 1101122220322200030 |
5 | 2413014011130443 |
6 | 104054334234140 |
7 | 6213230626104 |
oct | 1213250724014 |
9 | 270573164836 |
10 | 87420020748 |
11 | 34090360535 |
12 | 14b38955950 |
13 | 832246c038 |
14 | 43343cc204 |
15 | 2419b03583 |
hex | 145aa3a80c |
87420020748 has 48 divisors (see below), whose sum is σ = 208987265760. Its totient is φ = 28424908800.
The previous prime is 87420020711. The next prime is 87420020767. The reversal of 87420020748 is 84702002478.
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, 5270388 + ... + 5286948.
It is an arithmetic number, because the mean of its divisors is an integer number (4353901370).
Almost surely, 287420020748 is an apocalyptic number.
It is an amenable number.
87420020748 is an abundant number, since it is smaller than the sum of its proper divisors (121567245012).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
87420020748 is a wasteful number, since it uses less digits than its factorization.
87420020748 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 27338 (or 27336 counting only the distinct ones).
The product of its (nonzero) digits is 200704, while the sum is 42.
The spelling of 87420020748 in words is "eighty-seven billion, four hundred twenty million, twenty thousand, seven hundred forty-eight".
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