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30215230 = 253021523
BaseRepresentation
bin111001101000…
…0110000111110
32002212002111121
41303100300332
530213341410
62555341154
7514553023
oct163206076
962762447
1030215230
1116068171
12a1517ba
13634bc46
14402754a
1529bc9da
hex1cd0c3e

30215230 has 8 divisors (see below), whose sum is σ = 54387432. Its totient is φ = 12086088.

The previous prime is 30215221. The next prime is 30215231. The reversal of 30215230 is 3251203.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30215231) 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 3 ways as a sum of consecutive naturals, for example, 1510752 + ... + 1510771.

It is an arithmetic number, because the mean of its divisors is an integer number (6798429).

Almost surely, 230215230 is an apocalyptic number.

30215230 is a deficient number, since it is larger than the sum of its proper divisors (24172202).

30215230 is a wasteful number, since it uses less digits than its factorization.

30215230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3021530.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 30215230 is about 5496.8381820825. The cubic root of 30215230 is about 311.4645580076.

Adding to 30215230 its reverse (3251203), we get a palindrome (33466433).

The spelling of 30215230 in words is "thirty million, two hundred fifteen thousand, two hundred thirty".

Divisors: 1 2 5 10 3021523 6043046 15107615 30215230