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184138223 = 1492115857
BaseRepresentation
bin10101111100110…
…11100111101111
3110211111012011012
422332123213233
5334114410343
630134415435
74364102063
oct1276334757
9424435135
10184138223
1194a39855
125180157b
132c1c2639
141a653aa3
1511274718
hexaf9b9ef

184138223 has 8 divisors (see below), whose sum is σ = 186284400. Its totient is φ = 182004480.

The previous prime is 184138217. The next prime is 184138231. The reversal of 184138223 is 322831481.

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 184138223 - 210 = 184137199 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 184138223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (187138223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28511 + ... + 34367.

It is an arithmetic number, because the mean of its divisors is an integer number (23285550).

Almost surely, 2184138223 is an apocalyptic number.

184138223 is a deficient number, since it is larger than the sum of its proper divisors (2146177).

184138223 is a wasteful number, since it uses less digits than its factorization.

184138223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6217.

The product of its digits is 9216, while the sum is 32.

The square root of 184138223 is about 13569.7539771361. The cubic root of 184138223 is about 568.9157834471.

The spelling of 184138223 in words is "one hundred eighty-four million, one hundred thirty-eight thousand, two hundred twenty-three".

Divisors: 1 149 211 5857 31439 872693 1235827 184138223