243240030 has 64 divisors (see below), whose sum is σ = 707616000. Its totient is φ = 58966560.

The previous prime is 243239989. The next prime is 243240047. The reversal of 243240030 is 30042342.

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

It is a junction number, because it is equal to n+sod(n) for n = 243239985 and 243240012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37980 + ... + 43919.

It is an arithmetic number, because the mean of its divisors is an integer number (11056500).

Almost surely, 2^243240030 is an apocalyptic number.

243240030 is an abundant number, since it is smaller than the sum of its proper divisors (464375970).

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

243240030 is a wasteful number, since it uses less digits than its factorization.

243240030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81926 (or 81920 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 243240030 is about 15596.1543336811. The cubic root of 243240030 is about 624.2305453587.

Adding to 243240030 its reverse (30042342), we get a palindrome (273282372).

The spelling of 243240030 in words is "two hundred forty-three million, two hundred forty thousand, thirty".