Base | Representation |
---|---|
bin | 11100101001111110… |
… | …011110001011001001 |
3 | 2221102100022211111201 |
4 | 130221332132023021 |
5 | 1001003331412244 |
6 | 22045102424201 |
7 | 2136325204366 |
oct | 345176361311 |
9 | 87370284451 |
10 | 30769013449 |
11 | 1205a340239 |
12 | 5b68592061 |
13 | 2b947b8c45 |
14 | 16bc62946d |
15 | c013cead4 |
hex | 729f9e2c9 |
30769013449 has 8 divisors (see below), whose sum is σ = 30876793640. Its totient is φ = 30661410816.
The previous prime is 30769013441. The next prime is 30769013453. The reversal of 30769013449 is 94431096703.
It can be written as a sum of positive squares in 4 ways, for example, as 12444518025 + 18324495424 = 111555^2 + 135368^2 .
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 30769013449 - 23 = 30769013441 is a prime.
It is a super-4 number, since 4×307690134494 (a number of 43 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 30769013399 and 30769013408.
It is not an unprimeable number, because it can be changed into a prime (30769013441) 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, 307657 + ... + 395209.
It is an arithmetic number, because the mean of its divisors is an integer number (3859599205).
Almost surely, 230769013449 is an apocalyptic number.
It is an amenable number.
30769013449 is a deficient number, since it is larger than the sum of its proper divisors (107780191).
30769013449 is an equidigital number, since it uses as much as digits as its factorization.
30769013449 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 88779.
The product of its (nonzero) digits is 489888, while the sum is 46.
The spelling of 30769013449 in words is "thirty billion, seven hundred sixty-nine million, thirteen thousand, four hundred forty-nine".
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