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4288805 = 54120921
BaseRepresentation
bin10000010111000100100101
322001220010122
4100113010211
52044220210
6231531325
751311543
oct20270445
98056118
104288805
11246a274
121529b45
13b72171
147d8d93
1559ab55
hex417125

4288805 has 8 divisors (see below), whose sum is σ = 5272344. Its totient is φ = 3347200.

The previous prime is 4288799. The next prime is 4288807. The reversal of 4288805 is 5088824.

It can be written as a sum of positive squares in 4 ways, for example, as 98596 + 4190209 = 314^2 + 2047^2 .

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

It is not a de Polignac number, because 4288805 - 24 = 4288789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4288807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10256 + ... + 10665.

It is an arithmetic number, because the mean of its divisors is an integer number (659043).

Almost surely, 24288805 is an apocalyptic number.

It is an amenable number.

4288805 is a deficient number, since it is larger than the sum of its proper divisors (983539).

4288805 is a wasteful number, since it uses less digits than its factorization.

4288805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20967.

The product of its (nonzero) digits is 20480, while the sum is 35.

The square root of 4288805 is about 2070.9430219105. The cubic root of 4288805 is about 162.4720898811.

The spelling of 4288805 in words is "four million, two hundred eighty-eight thousand, eight hundred five".

Divisors: 1 5 41 205 20921 104605 857761 4288805