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23208223 = 533971103
BaseRepresentation
bin101100010001…
…0000100011111
31121200002200211
41120202010133
521420130343
62145233251
7401160313
oct130420437
947602624
1023208223
1112111755
127932827
134a6779c
143121b43
15208679d
hex162211f

23208223 has 8 divisors (see below), whose sum is σ = 23727168. Its totient is φ = 22692384.

The previous prime is 23208221. The next prime is 23208257. The reversal of 23208223 is 32280232.

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 23208223 - 21 = 23208221 is a prime.

It is a super-2 number, since 2×232082232 = 1077243229635458, 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 = 23208194 and 23208203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23208221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20490 + ... + 21592.

It is an arithmetic number, because the mean of its divisors is an integer number (2965896).

Almost surely, 223208223 is an apocalyptic number.

23208223 is a deficient number, since it is larger than the sum of its proper divisors (518945).

23208223 is a wasteful number, since it uses less digits than its factorization.

23208223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 23208223 is about 4817.4913596186. The cubic root of 23208223 is about 285.2423218642.

Adding to 23208223 its reverse (32280232), we get a palindrome (55488455).

The spelling of 23208223 in words is "twenty-three million, two hundred eight thousand, two hundred twenty-three".

Divisors: 1 53 397 1103 21041 58459 437891 23208223