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284345105 = 51126919219
BaseRepresentation
bin10000111100101…
…100001100010001
3201211001020011012
4100330230030101
51040243020410
644114300305
710021615322
oct2074541421
9654036135
10284345105
11136561760
127b287695
1346ba9355
1429a9a449
1519e6a605
hex10f2c311

284345105 has 16 divisors (see below), whose sum is σ = 373636800. Its totient is φ = 206016960.

The previous prime is 284345101. The next prime is 284345141. The reversal of 284345105 is 501543482.

It is not a de Polignac number, because 284345105 - 22 = 284345101 is a prime.

It is a super-3 number, since 3×2843451053 (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (284345101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5186 + ... + 24404.

It is an arithmetic number, because the mean of its divisors is an integer number (23352300).

Almost surely, 2284345105 is an apocalyptic number.

It is an amenable number.

284345105 is a deficient number, since it is larger than the sum of its proper divisors (89291695).

284345105 is a wasteful number, since it uses less digits than its factorization.

284345105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19504.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 284345105 is about 16862.5355448106. The cubic root of 284345105 is about 657.5799841975.

Adding to 284345105 its reverse (501543482), we get a palindrome (785888587).

The spelling of 284345105 in words is "two hundred eighty-four million, three hundred forty-five thousand, one hundred five".

Divisors: 1 5 11 55 269 1345 2959 14795 19219 96095 211409 1057045 5169911 25849555 56869021 284345105