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2808000 = 26335313
BaseRepresentation
bin1010101101100011000000
312021122212000
422231203000
51204324000
6140104000
732603406
oct12554300
95248760
102808000
111648768
12b35000
13774150
14531476
153a7000
hex2ad8c0

2808000 has 224 divisors, whose sum is σ = 11094720. Its totient is φ = 691200.

The previous prime is 2807977. The next prime is 2808007. The reversal of 2808000 is 8082.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is not an unprimeable number, because it can be changed into a prime (2808007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 215994 + ... + 216006.

It is an arithmetic number, because the mean of its divisors is an integer number (49530).

22808000 is an apocalyptic number.

2808000 is a gapful number since it is divisible by the number (20) 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 2808000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5547360).

2808000 is an abundant number, since it is smaller than the sum of its proper divisors (8286720).

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

2808000 is a wasteful number, since it uses less digits than its factorization.

2808000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49 (or 23 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 2808000 is about 1675.7088052523. The cubic root of 2808000 is about 141.0800812632.

The spelling of 2808000 in words is "two million, eight hundred eight thousand".