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20895343 = 73780677
BaseRepresentation
bin100111110110…
…1011001101111
31110022121000121
41033231121233
520322122333
62023505411
7342415240
oct117553157
943277017
1020895343
1110881a87
126bb8267
134437b11
142abccc7
151c7b32d
hex13ed66f

20895343 has 8 divisors (see below), whose sum is σ = 24526112. Its totient is φ = 17426016.

The previous prime is 20895319. The next prime is 20895349. The reversal of 20895343 is 34359802.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-20895343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20895299 and 20895308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20895349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40080 + ... + 40597.

It is an arithmetic number, because the mean of its divisors is an integer number (3065764).

Almost surely, 220895343 is an apocalyptic number.

20895343 is a deficient number, since it is larger than the sum of its proper divisors (3630769).

20895343 is an equidigital number, since it uses as much as digits as its factorization.

20895343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80721.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 20895343 is about 4571.1424173832. The cubic root of 20895343 is about 275.4333355389.

The spelling of 20895343 in words is "twenty million, eight hundred ninety-five thousand, three hundred forty-three".

Divisors: 1 7 37 259 80677 564739 2985049 20895343