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12804160000 = 295440013
BaseRepresentation
bin10111110110010111…
…11111101000000000
31020001100021201111011
423323023333220000
5202210331110000
65514313330304
7632204364352
oct137313775000
936040251434
1012804160000
115480683a15
122594106994
131290943048
1489674b0d2
154ee16a2ba
hex2fb2ffa00

12804160000 has 100 divisors (see below), whose sum is σ = 31969705482. Its totient is φ = 5121536000.

The previous prime is 12804159959. The next prime is 12804160003. The reversal of 12804160000 is 6140821.

It can be written as a sum of positive squares in 5 ways, for example, as 69488896 + 12734671104 = 8336^2 + 112848^2 .

It is a tau number, because it is divible by the number of its divisors (100).

It is not an unprimeable number, because it can be changed into a prime (12804160003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 299994 + ... + 340006.

Almost surely, 212804160000 is an apocalyptic number.

12804160000 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 12804160000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15984852741).

12804160000 is an abundant number, since it is smaller than the sum of its proper divisors (19165545482).

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

12804160000 is an frugal number, since it uses more digits than its factorization.

12804160000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40051 (or 40020 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The spelling of 12804160000 in words is "twelve billion, eight hundred four million, one hundred sixty thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 125 128 160 200 250 256 320 400 500 512 625 640 800 1000 1250 1280 1600 2000 2500 2560 3200 4000 5000 6400 8000 10000 12800 16000 20000 32000 40000 40013 64000 80000 80026 160000 160052 200065 320000 320104 400130 640208 800260 1000325 1280416 1600520 2000650 2560832 3201040 4001300 5001625 5121664 6402080 8002600 10003250 10243328 12804160 16005200 20006500 20486656 25008125 25608320 32010400 40013000 50016250 51216640 64020800 80026000 100032500 102433280 128041600 160052000 200065000 256083200 320104000 400130000 512166400 640208000 800260000 1280416000 1600520000 2560832000 3201040000 6402080000 12804160000