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30841029 = 3213725013
BaseRepresentation
bin111010110100…
…1100011000101
32011000212221100
41311221203011
530343403104
63021010313
7523100352
oct165514305
964025840
1030841029
111645535a
12a3b3999
13650aa3b
14414b629
152a93139
hex1d698c5

30841029 has 12 divisors (see below), whose sum is σ = 44875116. Its totient is φ = 20409792.

The previous prime is 30841003. The next prime is 30841037. The reversal of 30841029 is 92014803.

It can be written as a sum of positive squares in 2 ways, for example, as 26316900 + 4524129 = 5130^2 + 2127^2 .

It is not a de Polignac number, because 30841029 - 28 = 30840773 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30840993 and 30841011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30841039) 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 11 ways as a sum of consecutive naturals, for example, 11274 + ... + 13739.

It is an arithmetic number, because the mean of its divisors is an integer number (3739593).

Almost surely, 230841029 is an apocalyptic number.

It is an amenable number.

30841029 is a deficient number, since it is larger than the sum of its proper divisors (14034087).

30841029 is a wasteful number, since it uses less digits than its factorization.

30841029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25156 (or 25153 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 30841029 is about 5553.4699963176. The cubic root of 30841029 is about 313.6001679258.

The spelling of 30841029 in words is "thirty million, eight hundred forty-one thousand, twenty-nine".

Divisors: 1 3 9 137 411 1233 25013 75039 225117 3426781 10280343 30841029