Base | Representation |
---|---|
bin | 11111011101001000000 |
3 | 1221100212211 |
4 | 3323221000 |
5 | 230440340 |
6 | 34031504 |
7 | 11522005 |
oct | 3735100 |
9 | 1840784 |
10 | 1030720 |
11 | 644439 |
12 | 418594 |
13 | 2a11c2 |
14 | 1cb8ac |
15 | 1555ea |
hex | fba40 |
1030720 has 28 divisors (see below), whose sum is σ = 2455164. Its totient is φ = 412160.
The previous prime is 1030703. The next prime is 1030723. The reversal of 1030720 is 270301.
1030720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in 2 ways, for example, as 589824 + 440896 = 768^2 + 664^2 .
It is a nialpdrome in base 16.
It is a self number, because there is not a number n which added to its sum of digits gives 1030720.
It is not an unprimeable number, because it can be changed into a prime (1030723) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1291 + ... + 1930.
21030720 is an apocalyptic number.
1030720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
1030720 is an abundant number, since it is smaller than the sum of its proper divisors (1424444).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1030720 is an equidigital number, since it uses as much as digits as its factorization.
1030720 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3238 (or 3228 counting only the distinct ones).
The product of its (nonzero) digits is 42, while the sum is 13.
The square root of 1030720 is about 1015.2438130814. The cubic root of 1030720 is about 101.0136896126.
The spelling of 1030720 in words is "one million, thirty thousand, seven hundred twenty".
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