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10640808000 = 26345316421
BaseRepresentation
bin10011110100011110…
…11101100001000000
31000110120120001110000
421322033131201000
5133243021324000
64515513240000
7524455242564
oct117217354100
930416501400
1010640808000
1145705055a9
12208b703000
1310076a35c4
1472d2cd6a4
1542428c000
hex27a3dd840

10640808000 has 280 divisors, whose sum is σ = 39367672344. Its totient is φ = 2837376000.

The previous prime is 10640807987. The next prime is 10640808029. The reversal of 10640808000 is 80804601.

10640808000 is a `hidden beast` number, since 10 + 640 + 8 + 0 + 8 + 0 + 0 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2962842624 + 7677965376 = 54432^2 + 87624^2 .

It is a super-2 number, since 2×106408080002 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 639790 + ... + 656210.

Almost surely, 210640808000 is an apocalyptic number.

10640808000 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 10640808000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19683836172).

10640808000 is an abundant number, since it is smaller than the sum of its proper divisors (28726864344).

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

10640808000 is an equidigital number, since it uses as much as digits as its factorization.

10640808000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16460 (or 16431 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The spelling of 10640808000 in words is "ten billion, six hundred forty million, eight hundred eight thousand".