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30085512530 = 253739780449
BaseRepresentation
bin11100000001001111…
…000111110101010010
32212122201012101111212
4130001033013311102
5443103342400110
621453204540122
72113355431343
oct340117076522
985581171455
1030085512530
111183953a947
1259b76b1642
132ab6005628
1416559480ca
15bb13bae05
hex7013c7d52

30085512530 has 16 divisors (see below), whose sum is σ = 54156043800. Its totient is φ = 12033733632.

The previous prime is 30085512529. The next prime is 30085512533. The reversal of 30085512530 is 3521558003.

It can be written as a sum of positive squares in 4 ways, for example, as 19851964609 + 10233547921 = 140897^2 + 101161^2 .

It is not an unprimeable number, because it can be changed into a prime (30085512533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333746 + ... + 414194.

Almost surely, 230085512530 is an apocalyptic number.

30085512530 is a deficient number, since it is larger than the sum of its proper divisors (24070531270).

30085512530 is a wasteful number, since it uses less digits than its factorization.

30085512530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117853.

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 30085512530 in words is "thirty billion, eighty-five million, five hundred twelve thousand, five hundred thirty".

Divisors: 1 2 5 10 37397 74794 80449 160898 186985 373970 402245 804490 3008551253 6017102506 15042756265 30085512530