Base | Representation |
---|---|
bin | 11011111101011001… |
… | …100001100000000100 |
3 | 2212111020001102121202 |
4 | 123331121201200010 |
5 | 442440402131434 |
6 | 21442545002032 |
7 | 2111644253030 |
oct | 337531414004 |
9 | 85436042552 |
10 | 30021130244 |
11 | 11806166546 |
12 | 599a023318 |
13 | 2aa5882ac1 |
14 | 164b1891c0 |
15 | baa8eea7e |
hex | 6fd661804 |
30021130244 has 48 divisors (see below), whose sum is σ = 62359234560. Its totient is φ = 12378986400.
The previous prime is 30021130241. The next prime is 30021130261. The reversal of 30021130244 is 44203112003.
It is a super-2 number, since 2×300211302442 (a number of 22 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (30021130241) 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, 115682 + ... + 270969.
It is an arithmetic number, because the mean of its divisors is an integer number (1299150720).
Almost surely, 230021130244 is an apocalyptic number.
It is an amenable number.
30021130244 is an abundant number, since it is smaller than the sum of its proper divisors (32338104316).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30021130244 is a wasteful number, since it uses less digits than its factorization.
30021130244 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 386768 (or 386766 counting only the distinct ones).
The product of its (nonzero) digits is 576, while the sum is 20.
Adding to 30021130244 its reverse (44203112003), we get a palindrome (74224242247).
The spelling of 30021130244 in words is "thirty billion, twenty-one million, one hundred thirty thousand, two hundred forty-four".
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