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286930778112 = 21133113115217
BaseRepresentation
bin1000010110011100110…
…10000011100000000000
31000102121200212202201000
410023032122003200000
514200113234344422
6335451510212000
726505261241536
oct4131632034000
91012550782630
10286930778112
11100760a42480
1247738654000
1321099301614
14dc5d518156
1576e5136cac
hex42ce683800

286930778112 has 384 divisors, whose sum is σ = 957200025600. Its totient is φ = 84138393600.

The previous prime is 286930778107. The next prime is 286930778137. The reversal of 286930778112 is 211877039682.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 18848328 + ... + 18863544.

It is an arithmetic number, because the mean of its divisors is an integer number (2492708400).

Almost surely, 2286930778112 is an apocalyptic number.

286930778112 is a gapful number since it is divisible by the number (22) 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 286930778112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (478600012800).

286930778112 is an abundant number, since it is smaller than the sum of its proper divisors (670269247488).

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

286930778112 is a wasteful number, since it uses less digits than its factorization.

286930778112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15290 (or 15264 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 286930778112 in words is "two hundred eighty-six billion, nine hundred thirty million, seven hundred seventy-eight thousand, one hundred twelve".