204233009 has 8 divisors (see below), whose sum is σ = 210152232. Its totient is φ = 198390400.

The previous prime is 204232999. The next prime is 204233011. The reversal of 204233009 is 900332402.

It can be written as a sum of positive squares in 4 ways, for example, as 128890609 + 75342400 = 11353^2 + 8680^2 .

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 204233009 - 2⁸ = 204232753 is a prime.

It is a super-2 number, since 2×204233009² = 83422243930388162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204233039) 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, 13724 + ... + 24429.

It is an arithmetic number, because the mean of its divisors is an integer number (26269029).

Almost surely, 2^204233009 is an apocalyptic number.

It is an amenable number.

204233009 is a deficient number, since it is larger than the sum of its proper divisors (5919223).

204233009 is a wasteful number, since it uses less digits than its factorization.

204233009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38307.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 204233009 is about 14291.0114757494. The cubic root of 204233009 is about 588.9005753795.

It can be divided in two parts, 20423 and 3009, that added together give a palindrome (23432).

The spelling of 204233009 in words is "two hundred four million, two hundred thirty-three thousand, nine".