Base | Representation |
---|---|
bin | 1010011001010… |
… | …10001111001000 |
3 | 20002002110111201 |
4 | 11030222033020 |
5 | 134311023213 |
6 | 12353033544 |
7 | 2106141265 |
oct | 514521710 |
9 | 202073451 |
10 | 87204808 |
11 | 45252299 |
12 | 252558b4 |
13 | 150b38a2 |
14 | b82026c |
15 | 79c86dd |
hex | 532a3c8 |
87204808 has 16 divisors (see below), whose sum is σ = 164341980. Its totient is φ = 43380288.
The previous prime is 87204797. The next prime is 87204809. The reversal of 87204808 is 80840278.
It can be written as a sum of positive squares in 2 ways, for example, as 85414564 + 1790244 = 9242^2 + 1338^2 .
It is not an unprimeable number, because it can be changed into a prime (87204809) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26091 + ... + 29242.
Almost surely, 287204808 is an apocalyptic number.
It is an amenable number.
87204808 is a deficient number, since it is larger than the sum of its proper divisors (77137172).
87204808 is a wasteful number, since it uses less digits than its factorization.
87204808 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 55536 (or 55532 counting only the distinct ones).
The product of its (nonzero) digits is 28672, while the sum is 37.
The square root of 87204808 is about 9338.3514605095. The cubic root of 87204808 is about 443.4521961925.
It can be divided in two parts, 8 and 7204808, that multiplied together give a square (57638464 = 75922).
The spelling of 87204808 in words is "eighty-seven million, two hundred four thousand, eight hundred eight".
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