Base | Representation |
---|---|
bin | 101000111010010000… |
… | …0011100100111001100 |
3 | 22101202200211001121001 |
4 | 1101310200130213030 |
5 | 2414411111240110 |
6 | 104205400150044 |
7 | 6230050516246 |
oct | 1216440344714 |
9 | 271680731531 |
10 | 87854008780 |
11 | 3429333012a |
12 | 1503a168324 |
13 | 83913508a5 |
14 | 4375cbd096 |
15 | 2442c7c63a |
hex | 147481c9cc |
87854008780 has 48 divisors (see below), whose sum is σ = 185802271200. Its totient is φ = 34892480000.
The previous prime is 87854008757. The next prime is 87854008789. The reversal of 87854008780 is 8780045878.
It is not an unprimeable number, because it can be changed into a prime (87854008789) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12545280 + ... + 12552280.
It is an arithmetic number, because the mean of its divisors is an integer number (3870880650).
Almost surely, 287854008780 is an apocalyptic number.
It is an amenable number.
87854008780 is an abundant number, since it is smaller than the sum of its proper divisors (97948262420).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
87854008780 is a wasteful number, since it uses less digits than its factorization.
87854008780 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 11370 (or 11368 counting only the distinct ones).
The product of its (nonzero) digits is 4014080, while the sum is 55.
The spelling of 87854008780 in words is "eighty-seven billion, eight hundred fifty-four million, eight thousand, seven hundred eighty".
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