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30027930 = 2351000931
BaseRepresentation
bin111001010001…
…1000010011010
32002111120120120
41302203002122
530141343210
62551334110
7513142662
oct162430232
962446516
1030027930
1115a4a479
12a081336
1362b490a
143db91a2
152982270
hex1ca309a

30027930 has 16 divisors (see below), whose sum is σ = 72067104. Its totient is φ = 8007440.

The previous prime is 30027929. The next prime is 30027931. The reversal of 30027930 is 3972003.

It is an interprime number because it is at equal distance from previous prime (30027929) and next prime (30027931).

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30027930.

It is not an unprimeable number, because it can be changed into a prime (30027931) by changing a digit.

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, 500436 + ... + 500495.

It is an arithmetic number, because the mean of its divisors is an integer number (4504194).

Almost surely, 230027930 is an apocalyptic number.

30027930 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30027930 is an abundant number, since it is smaller than the sum of its proper divisors (42039174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30027930 is a wasteful number, since it uses less digits than its factorization.

30027930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000941.

The product of its (nonzero) digits is 1134, while the sum is 24.

The square root of 30027930 is about 5479.7746304022. The cubic root of 30027930 is about 310.8196484682.

Adding to 30027930 its reverse (3972003), we get a palindrome (33999933).

The spelling of 30027930 in words is "thirty million, twenty-seven thousand, nine hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 1000931 2001862 3002793 5004655 6005586 10009310 15013965 30027930