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12879369720 = 23325721275749
BaseRepresentation
bin10111111111010101…
…11001010111111000
31020020120210202211100
423333222321113320
5202334104312340
65530001331400
7634106556600
oct137752712770
936216722740
1012879369720
11550a083108
1225b5336b60
1312a33b6c39
148a2727c00
15505a74830
hex2ffab95f8

12879369720 has 288 divisors, whose sum is σ = 49083840000. Its totient is φ = 2920167936.

The previous prime is 12879369719. The next prime is 12879369743. The reversal of 12879369720 is 2796397821.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2237406 + ... + 2243154.

It is an arithmetic number, because the mean of its divisors is an integer number (170430000).

Almost surely, 212879369720 is an apocalyptic number.

12879369720 is a gapful number since it is divisible by the number (10) 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 12879369720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24541920000).

12879369720 is an abundant number, since it is smaller than the sum of its proper divisors (36204470280).

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

12879369720 is a wasteful number, since it uses less digits than its factorization.

12879369720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5907 (or 5893 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 12879369720 in words is "twelve billion, eight hundred seventy-nine million, three hundred sixty-nine thousand, seven hundred twenty".