Base | Representation |
---|---|
bin | 11101001011010… |
… | …110101001101001 |
3 | 1021010002222012100 |
4 | 131023112221221 |
5 | 2000304000000 |
6 | 120324004013 |
7 | 15062546154 |
oct | 3513265151 |
9 | 1233088170 |
10 | 489515625 |
11 | 231356375 |
12 | 117b30609 |
13 | 7a553c21 |
14 | 49026c9b |
15 | 2ce96a00 |
hex | 1d2d6a69 |
489515625 has 63 divisors (see below), whose sum is σ = 899070523. Its totient is φ = 256650000.
The previous prime is 489515623. The next prime is 489515627. The reversal of 489515625 is 526515984.
The square root of 489515625 is 22125.
It is a perfect power (a square), and thus also a powerful number.
489515625 is a `hidden beast` number, since 4 + 8 + 9 + 5 + 15 + 625 = 666.
It is an interprime number because it is at equal distance from previous prime (489515623) and next prime (489515627).
It can be written as a sum of positive squares in 3 ways, for example, as 428862681 + 60652944 = 20709^2 + 7788^2 .
It is not a de Polignac number, because 489515625 - 21 = 489515623 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (489515623) by changing a digit.
It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 8296846 + ... + 8296904.
Almost surely, 2489515625 is an apocalyptic number.
489515625 is a gapful number since it is divisible by the number (45) formed by its first and last digit.
489515625 is the 22125-th square number.
489515625 is the 11063-rd centered octagonal number.
It is an amenable number.
489515625 is a deficient number, since it is larger than the sum of its proper divisors (409554898).
489515625 is an frugal number, since it uses more digits than its factorization.
489515625 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 154 (or 67 counting only the distinct ones).
The product of its digits is 432000, while the sum is 45.
The cubic root of 489515625 is about 788.1136562293.
The spelling of 489515625 in words is "four hundred eighty-nine million, five hundred fifteen thousand, six hundred twenty-five".
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