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30141185 = 58967733
BaseRepresentation
bin111001011111…
…0101100000001
32002201022221012
41302332230001
530204004220
62554010305
7514124114
oct162765401
962638835
1030141185
1116017578
12a116995
136324329
14400857b
1529a5ac5
hex1cbeb01

30141185 has 8 divisors (see below), whose sum is σ = 36576360. Its totient is φ = 23841664.

The previous prime is 30141173. The next prime is 30141211. The reversal of 30141185 is 58114103.

It can be written as a sum of positive squares in 4 ways, for example, as 1540081 + 28601104 = 1241^2 + 5348^2 .

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 30141185 - 24 = 30141169 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30141185.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33422 + ... + 34311.

It is an arithmetic number, because the mean of its divisors is an integer number (4572045).

Almost surely, 230141185 is an apocalyptic number.

It is an amenable number.

30141185 is a deficient number, since it is larger than the sum of its proper divisors (6435175).

30141185 is an equidigital number, since it uses as much as digits as its factorization.

30141185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67827.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 30141185 is about 5490.0988151399. The cubic root of 30141185 is about 311.2099264010.

Adding to 30141185 its reverse (58114103), we get a palindrome (88255288).

The spelling of 30141185 in words is "thirty million, one hundred forty-one thousand, one hundred eighty-five".

Divisors: 1 5 89 445 67733 338665 6028237 30141185