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30020210 = 2511272911
BaseRepresentation
bin111001010000…
…1001001110010
32002111011222122
41302201021302
530141121320
62551234242
7513111323
oct162411162
962434878
1030020210
1115a446a0
12a078982
1362b124c
143db644a
15297ed25
hex1ca1272

30020210 has 16 divisors (see below), whose sum is σ = 58948992. Its totient is φ = 10916400.

The previous prime is 30020189. The next prime is 30020213. The reversal of 30020210 is 1202003.

It is not an unprimeable number, because it can be changed into a prime (30020213) 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, 136346 + ... + 136565.

It is an arithmetic number, because the mean of its divisors is an integer number (3684312).

Almost surely, 230020210 is an apocalyptic number.

30020210 is a deficient number, since it is larger than the sum of its proper divisors (28928782).

30020210 is a wasteful number, since it uses less digits than its factorization.

30020210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272929.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 30020210 is about 5479.0701765902. The cubic root of 30020210 is about 310.7930095651.

Adding to 30020210 its reverse (1202003), we get a palindrome (31222213).

The spelling of 30020210 in words is "thirty million, twenty thousand, two hundred ten".

Divisors: 1 2 5 10 11 22 55 110 272911 545822 1364555 2729110 3002021 6004042 15010105 30020210