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8210423 = 131274973
BaseRepresentation
bin11111010100011111110111
3120110010120202
4133110133313
54100213143
6451551115
7126534044
oct37243767
916403522
108210423
1146a8681
1228bb49b
131916150
14113a1cb
15ac2ab8
hex7d47f7

8210423 has 8 divisors (see below), whose sum is σ = 8913408. Its totient is φ = 7517664.

The previous prime is 8210401. The next prime is 8210437. The reversal of 8210423 is 3240128.

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

It is a cyclic number.

It is not a de Polignac number, because 8210423 - 218 = 7948279 is a prime.

It is a super-2 number, since 2×82104232 = 134822091677858, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8210395 and 8210404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8210453) 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, 836 + ... + 4137.

It is an arithmetic number, because the mean of its divisors is an integer number (1114176).

Almost surely, 28210423 is an apocalyptic number.

8210423 is a deficient number, since it is larger than the sum of its proper divisors (702985).

8210423 is a wasteful number, since it uses less digits than its factorization.

8210423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5113.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 8210423 is about 2865.3835694371. The cubic root of 8210423 is about 201.7383715448.

The spelling of 8210423 in words is "eight million, two hundred ten thousand, four hundred twenty-three".

Divisors: 1 13 127 1651 4973 64649 631571 8210423