Base | Representation |
---|---|
bin | 111001010001… |
… | …1101010010001 |
3 | 2002111201002001 |
4 | 1302203222101 |
5 | 30141433411 |
6 | 2551354001 |
7 | 513153265 |
oct | 162435221 |
9 | 62451061 |
10 | 30030481 |
11 | 15a51388 |
12 | a082901 |
13 | 62b5b20 |
14 | 3dba0a5 |
15 | 2982dc1 |
hex | 1ca3a91 |
30030481 has 8 divisors (see below), whose sum is σ = 32638760. Its totient is φ = 27464832.
The previous prime is 30030461. The next prime is 30030487. The reversal of 30030481 is 18403003.
It can be written as a sum of positive squares in 4 ways, for example, as 81 + 30030400 = 9^2 + 5480^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 30030481 - 29 = 30029969 is a prime.
It is a super-2 number, since 2×300304812 = 1803659578182722, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (30030487) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9180 + ... + 12013.
It is an arithmetic number, because the mean of its divisors is an integer number (4079845).
Almost surely, 230030481 is an apocalyptic number.
It is an amenable number.
30030481 is a deficient number, since it is larger than the sum of its proper divisors (2608279).
30030481 is a wasteful number, since it uses less digits than its factorization.
30030481 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 21315.
The product of its (nonzero) digits is 288, while the sum is 19.
The square root of 30030481 is about 5480.0073905060. The cubic root of 30030481 is about 310.8284500347.
Adding to 30030481 its reverse (18403003), we get a palindrome (48433484).
It can be divided in two parts, 300304 and 81, that multiplied together give a square (24324624 = 49322).
The spelling of 30030481 in words is "thirty million, thirty thousand, four hundred eighty-one".
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