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30221030 = 257431729
BaseRepresentation
bin111001101001…
…0001011100110
32002212101110102
41303102023212
530214033110
62555424102
7514605650
oct163221346
962771412
1030221030
1116071564
12a155032
136351788
1440296d0
1529be5a5
hex1cd22e6

30221030 has 16 divisors (see below), whose sum is σ = 62169120. Its totient is φ = 10361472.

The previous prime is 30221003. The next prime is 30221033. The reversal of 30221030 is 3012203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30221033) by changing a digit.

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, 215795 + ... + 215934.

It is an arithmetic number, because the mean of its divisors is an integer number (3885570).

Almost surely, 230221030 is an apocalyptic number.

30221030 is an abundant number, since it is smaller than the sum of its proper divisors (31948090).

30221030 is a wasteful number, since it uses less digits than its factorization.

30221030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431743.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 30221030 is about 5497.3657327851. The cubic root of 30221030 is about 311.4844859143.

Adding to 30221030 its reverse (3012203), we get a palindrome (33233233).

The spelling of 30221030 in words is "thirty million, two hundred twenty-one thousand, thirty".

Divisors: 1 2 5 7 10 14 35 70 431729 863458 2158645 3022103 4317290 6044206 15110515 30221030