243020004 has 48 divisors (see below), whose sum is σ = 584263680. Its totient is φ = 78573600.

The previous prime is 243019991. The next prime is 243020009. The reversal of 243020004 is 400020342.

It is a happy number.

243020004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (243020009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76357 + ... + 79475.

It is an arithmetic number, because the mean of its divisors is an integer number (12172160).

Almost surely, 2^243020004 is an apocalyptic number.

It is an amenable number.

243020004 is an abundant number, since it is smaller than the sum of its proper divisors (341243676).

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

243020004 is a wasteful number, since it uses less digits than its factorization.

243020004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3320 (or 3318 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 243020004 is about 15589.0988835147. The cubic root of 243020004 is about 624.0422699012.

Adding to 243020004 its reverse (400020342), we get a palindrome (643040346).

The spelling of 243020004 in words is "two hundred forty-three million, twenty thousand, four".