Base | Representation |
---|---|
bin | 11101001001111… |
… | …000100111111011 |
3 | 1021002101101220010 |
4 | 131021320213323 |
5 | 2000204133431 |
6 | 120311433003 |
7 | 15056353263 |
oct | 3511704773 |
9 | 1232341803 |
10 | 489130491 |
11 | 231112a83 |
12 | 117985763 |
13 | 7a44a835 |
14 | 48d667a3 |
15 | 2ce1c846 |
hex | 1d2789fb |
489130491 has 16 divisors (see below), whose sum is σ = 676076544. Its totient is φ = 314301024.
The previous prime is 489130487. The next prime is 489130507. The reversal of 489130491 is 194031984.
It is not a de Polignac number, because 489130491 - 22 = 489130487 is a prime.
It is not an unprimeable number, because it can be changed into a prime (489137491) 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, 8715 + ... + 32468.
It is an arithmetic number, because the mean of its divisors is an integer number (42254784).
Almost surely, 2489130491 is an apocalyptic number.
489130491 is a deficient number, since it is larger than the sum of its proper divisors (186946053).
489130491 is a wasteful number, since it uses less digits than its factorization.
489130491 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 41330.
The product of its (nonzero) digits is 31104, while the sum is 39.
The square root of 489130491 is about 22116.2946941842. The cubic root of 489130491 is about 787.9069151256.
The spelling of 489130491 in words is "four hundred eighty-nine million, one hundred thirty thousand, four hundred ninety-one".
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