Base | Representation |
---|---|
bin | 11100101011000110… |
… | …111101110111011011 |
3 | 2221110200002100100011 |
4 | 130223012331313123 |
5 | 1001023213031002 |
6 | 22051022022351 |
7 | 2136645555223 |
oct | 345306756733 |
9 | 87420070304 |
10 | 30788017627 |
11 | 1206a040374 |
12 | 5b72a179b7 |
13 | 2b98711013 |
14 | 16c0d75083 |
15 | c02dd58d7 |
hex | 72b1bdddb |
30788017627 has 4 divisors (see below), whose sum is σ = 30868404480. Its totient is φ = 30707630776.
The previous prime is 30788017609. The next prime is 30788017693. The reversal of 30788017627 is 72671088703.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72671088703 = 61 ⋅1191329323.
It is a cyclic number.
It is not a de Polignac number, because 30788017627 - 27 = 30788017499 is a prime.
It is a super-2 number, since 2×307880176272 (a number of 22 digits) contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (30788017607) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40192852 + ... + 40193617.
It is an arithmetic number, because the mean of its divisors is an integer number (7717101120).
Almost surely, 230788017627 is an apocalyptic number.
30788017627 is a deficient number, since it is larger than the sum of its proper divisors (80386853).
30788017627 is an equidigital number, since it uses as much as digits as its factorization.
30788017627 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 80386852.
The product of its (nonzero) digits is 790272, while the sum is 49.
The spelling of 30788017627 in words is "thirty billion, seven hundred eighty-eight million, seventeen thousand, six hundred twenty-seven".
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