Base | Representation |
---|---|
bin | 11101000011110… |
… | …100001001010000 |
3 | 1020222101120011101 |
4 | 131003310021100 |
5 | 1444302224110 |
6 | 120213354144 |
7 | 15040005214 |
oct | 3503641120 |
9 | 1228346141 |
10 | 487539280 |
11 | 230226528 |
12 | 117338954 |
13 | 7a0114a7 |
14 | 48a70944 |
15 | 2cc0613a |
hex | 1d0f4250 |
487539280 has 80 divisors (see below), whose sum is σ = 1188566784. Its totient is φ = 185630720.
The previous prime is 487539251. The next prime is 487539293. The reversal of 487539280 is 82935784.
It is a tau number, because it is divible by the number of its divisors (80).
It is a Harshad number since it is a multiple of its sum of digits (46).
It is a self number, because there is not a number n which added to its sum of digits gives 487539280.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 472365 + ... + 473395.
Almost surely, 2487539280 is an apocalyptic number.
487539280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 487539280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (594283392).
487539280 is an abundant number, since it is smaller than the sum of its proper divisors (701027504).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
487539280 is a wasteful number, since it uses less digits than its factorization.
487539280 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1324 (or 1318 counting only the distinct ones).
The product of its (nonzero) digits is 483840, while the sum is 46.
The square root of 487539280 is about 22080.2916647403. The cubic root of 487539280 is about 787.0515959062.
The spelling of 487539280 in words is "four hundred eighty-seven million, five hundred thirty-nine thousand, two hundred eighty".
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