Search a number
-
+
30830105 = 510956569
BaseRepresentation
bin111010110011…
…0111000011001
32011000022221202
41311212320121
530343030410
63020443545
7523023455
oct165467031
964008852
1030830105
1116448129
12a3a95b5
136505a87
144147665
152a8eca5
hex1d66e19

30830105 has 8 divisors (see below), whose sum is σ = 37336200. Its totient is φ = 24437376.

The previous prime is 30830081. The next prime is 30830119. The reversal of 30830105 is 50103803.

It can be written as a sum of positive squares in 4 ways, for example, as 13756681 + 17073424 = 3709^2 + 4132^2 .

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 30830105 - 218 = 30567961 is a prime.

It is a super-2 number, since 2×308301052 = 1900990748622050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27740 + ... + 28829.

It is an arithmetic number, because the mean of its divisors is an integer number (4667025).

Almost surely, 230830105 is an apocalyptic number.

It is an amenable number.

30830105 is a deficient number, since it is larger than the sum of its proper divisors (6506095).

30830105 is a wasteful number, since it uses less digits than its factorization.

30830105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56683.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 30830105 is about 5552.4863799923. The cubic root of 30830105 is about 313.5631374624.

Adding to 30830105 its reverse (50103803), we get a palindrome (80933908).

The spelling of 30830105 in words is "thirty million, eight hundred thirty thousand, one hundred five".

Divisors: 1 5 109 545 56569 282845 6166021 30830105