Base | Representation |
---|---|
bin | 101000101100011000… |
… | …0110010010101110111 |
3 | 22100120020221021210200 |
4 | 1101120300302111313 |
5 | 2412432430430124 |
6 | 104051251251543 |
7 | 6212366151336 |
oct | 1213060622567 |
9 | 270506837720 |
10 | 87388530039 |
11 | 34074602058 |
12 | 14b2a2a9bb3 |
13 | 8318a94695 |
14 | 4330151d1d |
15 | 2416e82bc9 |
hex | 1458c32577 |
87388530039 has 24 divisors (see below), whose sum is σ = 133780701600. Its totient is φ = 54779647488.
The previous prime is 87388529989. The next prime is 87388530059. The reversal of 87388530039 is 93003588378.
87388530039 is a `hidden beast` number, since 8 + 73 + 8 + 8 + 530 + 0 + 39 = 666.
It is not a de Polignac number, because 87388530039 - 227 = 87254312311 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (87388530059) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111747 + ... + 432740.
It is an arithmetic number, because the mean of its divisors is an integer number (5574195900).
Almost surely, 287388530039 is an apocalyptic number.
87388530039 is a deficient number, since it is larger than the sum of its proper divisors (46392171561).
87388530039 is a wasteful number, since it uses less digits than its factorization.
87388530039 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 545559 (or 545556 counting only the distinct ones).
The product of its (nonzero) digits is 4354560, while the sum is 54.
The spelling of 87388530039 in words is "eighty-seven billion, three hundred eighty-eight million, five hundred thirty thousand, thirty-nine".
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