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30284005 = 5191911669
BaseRepresentation
bin111001110000…
…1100011100101
32002222120211211
41303201203211
530223042010
63001031421
7515260363
oct163414345
962876754
1030284005
1116104904
12a185571
13637433b
144044633
1529d308a
hex1ce18e5

30284005 has 16 divisors (see below), whose sum is σ = 38476800. Its totient is φ = 22818240.

The previous prime is 30284003. The next prime is 30284011. The reversal of 30284005 is 50048203.

It is not a de Polignac number, because 30284005 - 21 = 30284003 is a prime.

It is a super-3 number, since 3×302840053 (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30284003) 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, 17311 + ... + 18979.

It is an arithmetic number, because the mean of its divisors is an integer number (2404800).

Almost surely, 230284005 is an apocalyptic number.

It is an amenable number.

30284005 is a deficient number, since it is larger than the sum of its proper divisors (8192795).

30284005 is a wasteful number, since it uses less digits than its factorization.

30284005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 30284005 is about 5503.0904953490. The cubic root of 30284005 is about 311.7006943633.

The spelling of 30284005 in words is "thirty million, two hundred eighty-four thousand, five".

Divisors: 1 5 19 95 191 955 1669 3629 8345 18145 31711 158555 318779 1593895 6056801 30284005