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30385984 = 261672843
BaseRepresentation
bin111001111101…
…0011101000000
32010011202201211
41303322131000
530234322414
63003135504
7516163606
oct163723500
963152654
1030385984
1116174492
12a214594
1363ab895
14406d876
152a033c4
hex1cfa740

30385984 has 28 divisors (see below), whose sum is σ = 60679584. Its totient is φ = 15096704.

The previous prime is 30385963. The next prime is 30386009. The reversal of 30385984 is 48958303.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 9267 + ... + 12109.

It is an arithmetic number, because the mean of its divisors is an integer number (2167128).

Almost surely, 230385984 is an apocalyptic number.

It is an amenable number.

30385984 is a deficient number, since it is larger than the sum of its proper divisors (30293600).

30385984 is a wasteful number, since it uses less digits than its factorization.

30385984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3022 (or 3012 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 30385984 is about 5512.3483199087. The cubic root of 30385984 is about 312.0501782105.

The spelling of 30385984 in words is "thirty million, three hundred eighty-five thousand, nine hundred eighty-four".

Divisors: 1 2 4 8 16 32 64 167 334 668 1336 2672 2843 5344 5686 10688 11372 22744 45488 90976 181952 474781 949562 1899124 3798248 7596496 15192992 30385984