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2808430 = 25280843
BaseRepresentation
bin1010101101101001101110
312021200102221
422231221232
51204332210
6140105554
732604562
oct12555156
95250387
102808430
111649019
12b352ba
137743c1
145316a2
153a71da
hex2ada6e

2808430 has 8 divisors (see below), whose sum is σ = 5055192. Its totient is φ = 1123368.

The previous prime is 2808427. The next prime is 2808433. The reversal of 2808430 is 348082.

It is an interprime number because it is at equal distance from previous prime (2808427) and next prime (2808433).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2808395 and 2808404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2808433) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 140412 + ... + 140431.

It is an arithmetic number, because the mean of its divisors is an integer number (631899).

22808430 is an apocalyptic number.

2808430 is a deficient number, since it is larger than the sum of its proper divisors (2246762).

2808430 is a wasteful number, since it uses less digits than its factorization.

2808430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280850.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 2808430 is about 1675.8371042557. The cubic root of 2808430 is about 141.0872822769.

The spelling of 2808430 in words is "two million, eight hundred eight thousand, four hundred thirty".

Divisors: 1 2 5 10 280843 561686 1404215 2808430