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204233493 = 378738647
BaseRepresentation
bin11000010110001…
…01101100010101
3112020022010200110
430023011230111
5404240432433
632133233233
75026645632
oct1413055425
9466263613
10204233493
11a5314712
1258492819
133340a229
141d1a5189
1512de3963
hexc2c5b15

204233493 has 8 divisors (see below), whose sum is σ = 272377408. Its totient is φ = 136122624.

The previous prime is 204233483. The next prime is 204233507. The reversal of 204233493 is 394332402.

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

It is not a de Polignac number, because 204233493 - 217 = 204102421 is a prime.

It is a super-2 number, since 2×2042334932 = 83422639325962098, which contains 22 as substring.

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 204233493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204233453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19296 + ... + 27942.

It is an arithmetic number, because the mean of its divisors is an integer number (34047176).

Almost surely, 2204233493 is an apocalyptic number.

It is an amenable number.

204233493 is a deficient number, since it is larger than the sum of its proper divisors (68143915).

204233493 is an equidigital number, since it uses as much as digits as its factorization.

204233493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16523.

The product of its (nonzero) digits is 15552, while the sum is 30.

The square root of 204233493 is about 14291.0284094603. The cubic root of 204233493 is about 588.9010405796.

Adding to 204233493 its reverse (394332402), we get a palindrome (598565895).

The spelling of 204233493 in words is "two hundred four million, two hundred thirty-three thousand, four hundred ninety-three".

Divisors: 1 3 7873 8647 23619 25941 68077831 204233493