243430000 has 100 divisors (see below), whose sum is σ = 643237848. Its totient is φ = 88480000.

The previous prime is 243429971. The next prime is 243430037. The reversal of 243430000 is 34342.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 108894 + ... + 111106.

Almost surely, 2^243430000 is an apocalyptic number.

243430000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243430000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321618924).

243430000 is an abundant number, since it is smaller than the sum of its proper divisors (399807848).

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

243430000 is a wasteful number, since it uses less digits than its factorization.

243430000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252 (or 2231 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 243430000 is about 15602.2434284304. The cubic root of 243430000 is about 624.3930106932.

Adding to 243430000 its reverse (34342), we get a palindrome (243464342).

The spelling of 243430000 in words is "two hundred forty-three million, four hundred thirty thousand".