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13200019028 = 2271094325039
BaseRepresentation
bin11000100101100100…
…00100111001010100
31021001221011102222122
430102302010321110
5204013201102103
610021454115112
7645052211330
oct142262047124
937057142878
1013200019028
115664080739
1226847aba98
131324964861
148d31547c0
15523cb1b38
hex312c84e54

13200019028 has 24 divisors (see below), whose sum is σ = 26642246400. Its totient is φ = 5605249248.

The previous prime is 13200019013. The next prime is 13200019051. The reversal of 13200019028 is 82091000231.

It is a junction number, because it is equal to n+sod(n) for n = 13200018988 and 13200019006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2159468 + ... + 2165571.

It is an arithmetic number, because the mean of its divisors is an integer number (1110093600).

Almost surely, 213200019028 is an apocalyptic number.

It is an amenable number.

13200019028 is an abundant number, since it is smaller than the sum of its proper divisors (13442227372).

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

13200019028 is a wasteful number, since it uses less digits than its factorization.

13200019028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4325159 (or 4325157 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

Adding to 13200019028 its reverse (82091000231), we get a palindrome (95291019259).

The spelling of 13200019028 in words is "thirteen billion, two hundred million, nineteen thousand, twenty-eight".

Divisors: 1 2 4 7 14 28 109 218 436 763 1526 3052 4325039 8650078 17300156 30275273 60550546 121101092 471429251 942858502 1885717004 3300004757 6600009514 13200019028