Base | Representation |
---|---|
bin | 11101001011111… |
… | …110100001111010 |
3 | 1021010102021021011 |
4 | 131023332201322 |
5 | 2000324211340 |
6 | 120331304134 |
7 | 15064126324 |
oct | 3513764172 |
9 | 1233367234 |
10 | 489678970 |
11 | 231458070 |
12 | 117bab04a |
13 | 7a5b0391 |
14 | 4906a614 |
15 | 2ceca0ea |
hex | 1d2fe87a |
489678970 has 32 divisors (see below), whose sum is σ = 1003363200. Its totient is φ = 170322240.
The previous prime is 489678961. The next prime is 489678971. The reversal of 489678970 is 79876984.
It is a happy number.
It is not an unprimeable number, because it can be changed into a prime (489678971) 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, 94245 + ... + 99304.
It is an arithmetic number, because the mean of its divisors is an integer number (31355100).
Almost surely, 2489678970 is an apocalyptic number.
489678970 is an abundant number, since it is smaller than the sum of its proper divisors (513684230).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
489678970 is a wasteful number, since it uses less digits than its factorization.
489678970 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 193590.
The product of its (nonzero) digits is 6096384, while the sum is 58.
The square root of 489678970 is about 22128.6911045367. The cubic root of 489678970 is about 788.2013075744.
The spelling of 489678970 in words is "four hundred eighty-nine million, six hundred seventy-eight thousand, nine hundred seventy".
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