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30483905 = 515738833
BaseRepresentation
bin111010001001…
…0010111000001
32010100202001112
41310102113001
530300441110
63005213105
7520052234
oct164222701
963322045
1030483905
1116231011
12a261195
13641431a
14409741b
152a22405
hex1d125c1

30483905 has 8 divisors (see below), whose sum is σ = 36814632. Its totient is φ = 24231168.

The previous prime is 30483889. The next prime is 30483913. The reversal of 30483905 is 50938403.

It can be written as a sum of positive squares in 4 ways, for example, as 101761 + 30382144 = 319^2 + 5512^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30483905 - 24 = 30483889 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18632 + ... + 20201.

It is an arithmetic number, because the mean of its divisors is an integer number (4601829).

Almost surely, 230483905 is an apocalyptic number.

It is an amenable number.

30483905 is a deficient number, since it is larger than the sum of its proper divisors (6330727).

30483905 is a wasteful number, since it uses less digits than its factorization.

30483905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38995.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 30483905 is about 5521.2231434710. The cubic root of 30483905 is about 312.3850201000.

The spelling of 30483905 in words is "thirty million, four hundred eighty-three thousand, nine hundred five".

Divisors: 1 5 157 785 38833 194165 6096781 30483905