243045000 has 240 divisors, whose sum is σ = 899149680. Its totient is φ = 58800000.

The previous prime is 243044983. The next prime is 243045029. The reversal of 243045000 is 540342.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 494755 + ... + 495245.

It is an arithmetic number, because the mean of its divisors is an integer number (3746457).

Almost surely, 2^243045000 is an apocalyptic number.

243045000 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 243045000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (449574840).

243045000 is an abundant number, since it is smaller than the sum of its proper divisors (656104680).

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

243045000 is a wasteful number, since it uses less digits than its factorization.

243045000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534 (or 512 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 243045000 is about 15589.9005769761. The cubic root of 243045000 is about 624.0636646088.

Adding to 243045000 its reverse (540342), we get a palindrome (243585342).

The spelling of 243045000 in words is "two hundred forty-three million, forty-five thousand".