204322493 has 4 divisors (see below), whose sum is σ = 204360348. Its totient is φ = 204284640.

The previous prime is 204322477. The next prime is 204322499. The reversal of 204322493 is 394223402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 199883044 + 4439449 = 14138^2 + 2107^2 .

It is a cyclic number.

It is not a de Polignac number, because 204322493 - 2⁴ = 204322477 is a prime.

It is a super-2 number, since 2×204322493² = 83495362291470098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204322499) 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 3 ways as a sum of consecutive naturals, for example, 9146 + ... + 22187.

It is an arithmetic number, because the mean of its divisors is an integer number (51090087).

Almost surely, 2^204322493 is an apocalyptic number.

It is an amenable number.

204322493 is a deficient number, since it is larger than the sum of its proper divisors (37855).

204322493 is an equidigital number, since it uses as much as digits as its factorization.

204322493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37854.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 204322493 is about 14294.1419119862. The cubic root of 204322493 is about 588.9865710842.

Adding to 204322493 its reverse (394223402), we get a palindrome (598545895).

The spelling of 204322493 in words is "two hundred four million, three hundred twenty-two thousand, four hundred ninety-three".