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12820162248 = 233433159771
BaseRepresentation
bin10111111000010010…
…00010011011001000
31020002110101201110000
423330021002123020
5202223430142443
65520044323000
7632460403215
oct137411023310
936073351400
1012820162248
115489713713
122599543460
13129405692a
14898914b0c
1550077b8d3
hex2fc2426c8

12820162248 has 80 divisors (see below), whose sum is σ = 36017411760. Its totient is φ = 4260405600.

The previous prime is 12820162241. The next prime is 12820162249. The reversal of 12820162248 is 84226102821.

12820162248 is a `hidden beast` number, since 1 + 2 + 8 + 20 + 1 + 622 + 4 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (12820162241) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 184603 + ... + 244373.

It is an arithmetic number, because the mean of its divisors is an integer number (450217647).

Almost surely, 212820162248 is an apocalyptic number.

12820162248 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12820162248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18008705880).

12820162248 is an abundant number, since it is smaller than the sum of its proper divisors (23197249512).

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

12820162248 is a wasteful number, since it uses less digits than its factorization.

12820162248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60120 (or 60107 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The spelling of 12820162248 in words is "twelve billion, eight hundred twenty million, one hundred sixty-two thousand, two hundred forty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 36 54 72 81 108 162 216 324 331 648 662 993 1324 1986 2648 2979 3972 5958 7944 8937 11916 17874 23832 26811 35748 53622 59771 71496 107244 119542 179313 214488 239084 358626 478168 537939 717252 1075878 1434504 1613817 2151756 3227634 4303512 4841451 6455268 9682902 12910536 19365804 19784201 38731608 39568402 59352603 79136804 118705206 158273608 178057809 237410412 356115618 474820824 534173427 712231236 1068346854 1424462472 1602520281 2136693708 3205040562 4273387416 6410081124 12820162248