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30081008 = 243495387
BaseRepresentation
bin111001010111…
…1111111110000
32002121021101102
41302233333300
530200043013
62552423532
7513453506
oct162577760
962537342
1030081008
1115a86341
12a0a7ba8
136302b19
143dd0676
152992d58
hex1cafff0

30081008 has 20 divisors (see below), whose sum is σ = 58459800. Its totient is φ = 14994624.

The previous prime is 30081001. The next prime is 30081011. The reversal of 30081008 is 80018003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30081001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2891 + ... + 8277.

It is an arithmetic number, because the mean of its divisors is an integer number (2922990).

Almost surely, 230081008 is an apocalyptic number.

It is an amenable number.

30081008 is a deficient number, since it is larger than the sum of its proper divisors (28378792).

30081008 is a wasteful number, since it uses less digits than its factorization.

30081008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5744 (or 5738 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 30081008 is about 5484.6155744956. The cubic root of 30081008 is about 311.0026777822.

The spelling of 30081008 in words is "thirty million, eighty-one thousand, eight".

Divisors: 1 2 4 8 16 349 698 1396 2792 5387 5584 10774 21548 43096 86192 1880063 3760126 7520252 15040504 30081008