243085530 has 16 divisors (see below), whose sum is σ = 583405344. Its totient is φ = 64822800.

The previous prime is 243085529. The next prime is 243085537. The reversal of 243085530 is 35580342.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 8102851 = 243085530 / (2 + 4 + 3 + 0 + 8 + 5 + 5 + 3 + 0).

It is not an unprimeable number, because it can be changed into a prime (243085537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4051396 + ... + 4051455.

It is an arithmetic number, because the mean of its divisors is an integer number (36462834).

Almost surely, 2^243085530 is an apocalyptic number.

243085530 is an abundant number, since it is smaller than the sum of its proper divisors (340319814).

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

243085530 is a wasteful number, since it uses less digits than its factorization.

243085530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8102861.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 243085530 is about 15591.2004027913. The cubic root of 243085530 is about 624.0983521420.

The spelling of 243085530 in words is "two hundred forty-three million, eighty-five thousand, five hundred thirty".