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30021230 = 253002123
BaseRepresentation
bin111001010000…
…1011001101110
32002111020101102
41302201121232
530141134410
62551243102
7513114311
oct162413156
962436342
1030021230
1115a45438
12a079492
1362b1855
143db6978
1529802a5
hex1ca166e

30021230 has 8 divisors (see below), whose sum is σ = 54038232. Its totient is φ = 12008488.

The previous prime is 30021227. The next prime is 30021241. The reversal of 30021230 is 3212003.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 1501052 + ... + 1501071.

It is an arithmetic number, because the mean of its divisors is an integer number (6754779).

Almost surely, 230021230 is an apocalyptic number.

30021230 is a deficient number, since it is larger than the sum of its proper divisors (24017002).

30021230 is a wasteful number, since it uses less digits than its factorization.

30021230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3002130.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 30021230 is about 5479.1632572866. The cubic root of 30021230 is about 310.7965294748.

Adding to 30021230 its reverse (3212003), we get a palindrome (33233233).

The spelling of 30021230 in words is "thirty million, twenty-one thousand, two hundred thirty".

Divisors: 1 2 5 10 3002123 6004246 15010615 30021230