Base | Representation |
---|---|
bin | 111001011111… |
… | …1101001100010 |
3 | 2002201112100000 |
4 | 1302333221202 |
5 | 30204120442 |
6 | 2554040430 |
7 | 514141440 |
oct | 162775142 |
9 | 62645300 |
10 | 30145122 |
11 | 1601a527 |
12 | a119116 |
13 | 6326067 |
14 | 4009b90 |
15 | 29a6d4c |
hex | 1cbfa62 |
30145122 has 48 divisors (see below), whose sum is σ = 77418432. Its totient is φ = 8611920.
The previous prime is 30145081. The next prime is 30145133. The reversal of 30145122 is 22154103.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 30145095 and 30145104.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1029 + ... + 7832.
It is an arithmetic number, because the mean of its divisors is an integer number (1612884).
Almost surely, 230145122 is an apocalyptic number.
30145122 is an abundant number, since it is smaller than the sum of its proper divisors (47273310).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30145122 is an equidigital number, since it uses as much as digits as its factorization.
30145122 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 8885 (or 8873 counting only the distinct ones).
The product of its (nonzero) digits is 240, while the sum is 18.
The square root of 30145122 is about 5490.4573579985. The cubic root of 30145122 is about 311.2234757481.
Adding to 30145122 its reverse (22154103), we get a palindrome (52299225).
The spelling of 30145122 in words is "thirty million, one hundred forty-five thousand, one hundred twenty-two".
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