243434004 has 96 divisors (see below), whose sum is σ = 674956800. Its totient is φ = 67455360.

The previous prime is 243434003. The next prime is 243434017. The reversal of 243434004 is 400434342.

It is a happy number.

It is a super-2 number, since 2×243434004² = 118520228606944032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243434003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71059 + ... + 74405.

It is an arithmetic number, because the mean of its divisors is an integer number (7030800).

Almost surely, 2^243434004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243434004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337478400).

243434004 is an abundant number, since it is smaller than the sum of its proper divisors (431522796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243434004 is a wasteful number, since it uses less digits than its factorization.

243434004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3413 (or 3411 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 243434004 is about 15602.3717427832. The cubic root of 243434004 is about 624.3964340674.

Adding to 243434004 its reverse (400434342), we get a palindrome (643868346).

The spelling of 243434004 in words is "two hundred forty-three million, four hundred thirty-four thousand, four".