Base | Representation |
---|---|
bin | 10001001001011… |
… | …010011010011000 |
3 | 202001022122222110 |
4 | 101021122122120 |
5 | 1042121231102 |
6 | 44313552320 |
7 | 10062145434 |
oct | 2111323230 |
9 | 661278873 |
10 | 287680152 |
11 | 13842a3a1 |
12 | 804156a0 |
13 | 477a6356 |
14 | 2a2c79c4 |
15 | 1a3c886c |
hex | 1125a698 |
287680152 has 32 divisors (see below), whose sum is σ = 729056880. Its totient is φ = 94579200.
The previous prime is 287680147. The next prime is 287680157. The reversal of 287680152 is 251086782.
It is an interprime number because it is at equal distance from previous prime (287680147) and next prime (287680157).
It is a self number, because there is not a number n which added to its sum of digits gives 287680152.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (287680157) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80349 + ... + 83852.
Almost surely, 2287680152 is an apocalyptic number.
It is an amenable number.
287680152 is an abundant number, since it is smaller than the sum of its proper divisors (441376728).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
287680152 is a wasteful number, since it uses less digits than its factorization.
287680152 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 164283 (or 164279 counting only the distinct ones).
The product of its (nonzero) digits is 53760, while the sum is 39.
The square root of 287680152 is about 16961.1365185238. The cubic root of 287680152 is about 660.1408881965.
It can be divided in two parts, 2876 and 80152, that added together give a triangular number (83028 = T407).
The spelling of 287680152 in words is "two hundred eighty-seven million, six hundred eighty thousand, one hundred fifty-two".
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