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3012051220 = 225150602561
BaseRepresentation
bin1011001110001000…
…0100000100010100
321202220201001111121
42303202010010110
522132041114340
61214514413324
7134433004303
oct26342040424
97686631447
103012051220
111306251732
12700891244
13390043939
1420806243a
1512967494a
hexb3884114

3012051220 has 12 divisors (see below), whose sum is σ = 6325307604. Its totient is φ = 1204820480.

The previous prime is 3012051199. The next prime is 3012051239. The reversal of 3012051220 is 221502103.

It can be written as a sum of positive squares in 2 ways, for example, as 648924676 + 2363126544 = 25474^2 + 48612^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3012051194 and 3012051203.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 75301261 + ... + 75301300.

It is an arithmetic number, because the mean of its divisors is an integer number (527108967).

Almost surely, 23012051220 is an apocalyptic number.

It is an amenable number.

3012051220 is an abundant number, since it is smaller than the sum of its proper divisors (3313256384).

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

3012051220 is a wasteful number, since it uses less digits than its factorization.

3012051220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150602570 (or 150602568 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 3012051220 is about 54882.1575742062. The cubic root of 3012051220 is about 1444.1781975587.

Adding to 3012051220 its reverse (221502103), we get a palindrome (3233553323).

The spelling of 3012051220 in words is "three billion, twelve million, fifty-one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 150602561 301205122 602410244 753012805 1506025610 3012051220