| Base | Representation |
|---|---|
| bin | 1010011100101… |
| … | …01001111001000 |
| 3 | 20002220201201000 |
| 4 | 11032111033020 |
| 5 | 134414034310 |
| 6 | 12410255000 |
| 7 | 2112645120 |
| oct | 516251710 |
| 9 | 202821630 |
| 10 | 87643080 |
| 11 | 455215a8 |
| 12 | 25427460 |
| 13 | 15208215 |
| 14 | b8d5c80 |
| 15 | 7a634c0 |
| hex | 53953c8 |
87643080 has 128 divisors (see below), whose sum is σ = 333907200. Its totient is φ = 20030976.
The previous prime is 87643069. The next prime is 87643091. The reversal of 87643080 is 8034678.
87643080 is a `hidden beast` number, since 8 + 7 + 643 + 0 + 8 + 0 = 666.
It is an interprime number because it is at equal distance from previous prime (87643069) and next prime (87643091).
It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1764 + ... + 13356.
It is an arithmetic number, because the mean of its divisors is an integer number (2608650).
Almost surely, 287643080 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 87643080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166953600).
87643080 is an abundant number, since it is smaller than the sum of its proper divisors (246264120).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
87643080 is a wasteful number, since it uses less digits than its factorization.
87643080 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 11620 (or 11610 counting only the distinct ones).
The product of its (nonzero) digits is 32256, while the sum is 36.
The square root of 87643080 is about 9361.7882907060. The cubic root of 87643080 is about 444.1938525312.
It can be divided in two parts, 876 and 43080, that added together give a triangular number (43956 = T296).
The spelling of 87643080 in words is "eighty-seven million, six hundred forty-three thousand, eighty".
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