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30021106 = 279251757
BaseRepresentation
bin111001010000…
…1010111110010
32002111020012211
41302201113302
530141133411
62551242334
7513114043
oct162412762
962436184
1030021106
1115a45335
12a0793aa
1362b178b
143db68ca
152980221
hex1ca15f2

30021106 has 16 divisors (see below), whose sum is σ = 45843840. Its totient is φ = 14742000.

The previous prime is 30021091. The next prime is 30021137. The reversal of 30021106 is 60112003.

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 7 ways as a sum of consecutive naturals, for example, 39280 + ... + 40036.

It is an arithmetic number, because the mean of its divisors is an integer number (2865240).

Almost surely, 230021106 is an apocalyptic number.

30021106 is a deficient number, since it is larger than the sum of its proper divisors (15822734).

30021106 is a wasteful number, since it uses less digits than its factorization.

30021106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 30021106 is about 5479.1519416786. The cubic root of 30021106 is about 310.7961015684.

Adding to 30021106 its reverse (60112003), we get a palindrome (90133109).

The spelling of 30021106 in words is "thirty million, twenty-one thousand, one hundred six".

Divisors: 1 2 79 158 251 502 757 1514 19829 39658 59803 119606 190007 380014 15010553 30021106