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10808289 = 33400307
BaseRepresentation
bin101001001110…
…101111100001
3202100010012000
4221032233201
510231331124
61023354213
7160604022
oct51165741
922303160
1010808289
116112478
123752969
13231574b
141614c49
15e376c9
hexa4ebe1

10808289 has 8 divisors (see below), whose sum is σ = 16012320. Its totient is φ = 7205508.

The previous prime is 10808267. The next prime is 10808299. The reversal of 10808289 is 98280801.

It is not a de Polignac number, because 10808289 - 25 = 10808257 is a prime.

It is a super-2 number, since 2×108082892 = 233638222215042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10808299) 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 7 ways as a sum of consecutive naturals, for example, 200127 + ... + 200180.

It is an arithmetic number, because the mean of its divisors is an integer number (2001540).

Almost surely, 210808289 is an apocalyptic number.

It is an amenable number.

10808289 is a deficient number, since it is larger than the sum of its proper divisors (5204031).

10808289 is an equidigital number, since it uses as much as digits as its factorization.

10808289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400316 (or 400310 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 10808289 is about 3287.5962343329. The cubic root of 10808289 is about 221.0984253407.

The spelling of 10808289 in words is "ten million, eight hundred eight thousand, two hundred eighty-nine".

Divisors: 1 3 9 27 400307 1200921 3602763 10808289