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8240223 = 317161573
BaseRepresentation
bin11111011011110001011111
3120111122110110
4133123301133
54102141343
6452341103
7130016655
oct37336137
916448413
108240223
114719002
122914793
131926894
141146dd5
15acb833
hex7dbc5f

8240223 has 8 divisors (see below), whose sum is σ = 11633328. Its totient is φ = 5170304.

The previous prime is 8240213. The next prime is 8240227. The reversal of 8240223 is 3220428.

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 8240223 - 28 = 8239967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8240223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8240227) 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, 80736 + ... + 80837.

It is an arithmetic number, because the mean of its divisors is an integer number (1454166).

Almost surely, 28240223 is an apocalyptic number.

8240223 is a deficient number, since it is larger than the sum of its proper divisors (3393105).

8240223 is a wasteful number, since it uses less digits than its factorization.

8240223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161593.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 8240223 is about 2870.5788614842. The cubic root of 8240223 is about 201.9821488653.

The spelling of 8240223 in words is "eight million, two hundred forty thousand, two hundred twenty-three".

Divisors: 1 3 17 51 161573 484719 2746741 8240223