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30844005 = 3519910333
BaseRepresentation
bin111010110101…
…0010001100101
32011001001000120
41311222101211
530344002010
63021032153
7523112133
oct165522145
964031016
1030844005
1116457615
12a3b5659
13650c1ba
14414c753
152a93e70
hex1d6a465

30844005 has 16 divisors (see below), whose sum is σ = 49603200. Its totient is φ = 16365888.

The previous prime is 30843991. The next prime is 30844007. The reversal of 30844005 is 50044803.

It is a happy number.

It is not a de Polignac number, because 30844005 - 26 = 30843941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30844007) 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 15 ways as a sum of consecutive naturals, for example, 2182 + ... + 8151.

It is an arithmetic number, because the mean of its divisors is an integer number (3100200).

Almost surely, 230844005 is an apocalyptic number.

It is an amenable number.

30844005 is a deficient number, since it is larger than the sum of its proper divisors (18759195).

30844005 is a wasteful number, since it uses less digits than its factorization.

30844005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10540.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 30844005 is about 5553.7379304393. The cubic root of 30844005 is about 313.6102545335.

Adding to 30844005 its reverse (50044803), we get a palindrome (80888808).

The spelling of 30844005 in words is "thirty million, eight hundred forty-four thousand, five".

Divisors: 1 3 5 15 199 597 995 2985 10333 30999 51665 154995 2056267 6168801 10281335 30844005