Base | Representation |
---|---|
bin | 11101000010101… |
… | …000110110001101 |
3 | 1020221210220002110 |
4 | 131002220312031 |
5 | 1444212341421 |
6 | 120203014233 |
7 | 15034252065 |
oct | 3502506615 |
9 | 1227726073 |
10 | 487230861 |
11 | 230035837 |
12 | 11720a379 |
13 | 79c33cb0 |
14 | 489d03a5 |
15 | 2cb94a76 |
hex | 1d0a8d8d |
487230861 has 16 divisors (see below), whose sum is σ = 702941120. Its totient is φ = 298408320.
The previous prime is 487230859. The next prime is 487230871. The reversal of 487230861 is 168032784.
It is not a de Polignac number, because 487230861 - 21 = 487230859 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (39).
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (487230871) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21376 + ... + 37833.
It is an arithmetic number, because the mean of its divisors is an integer number (43933820).
Almost surely, 2487230861 is an apocalyptic number.
It is an amenable number.
487230861 is a deficient number, since it is larger than the sum of its proper divisors (215710259).
487230861 is a wasteful number, since it uses less digits than its factorization.
487230861 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 59436.
The product of its (nonzero) digits is 64512, while the sum is 39.
The square root of 487230861 is about 22073.3065262094. The cubic root of 487230861 is about 786.8855970623.
The spelling of 487230861 in words is "four hundred eighty-seven million, two hundred thirty thousand, eight hundred sixty-one".
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