243582380 has 12 divisors (see below), whose sum is σ = 511523040. Its totient is φ = 97432944.

The previous prime is 243582323. The next prime is 243582389. The reversal of 243582380 is 83285342.

It is a super-4 number, since 4×243582380⁴ (a number of 35 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 243582380.

It is not an unprimeable number, because it can be changed into a prime (243582389) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6089540 + ... + 6089579.

It is an arithmetic number, because the mean of its divisors is an integer number (42626920).

Almost surely, 2^243582380 is an apocalyptic number.

243582380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243582380 is an abundant number, since it is smaller than the sum of its proper divisors (267940660).

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

243582380 is a wasteful number, since it uses less digits than its factorization.

243582380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12179128 (or 12179126 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 243582380 is about 15607.1259365714. The cubic root of 243582380 is about 624.5232673874.

The spelling of 243582380 in words is "two hundred forty-three million, five hundred eighty-two thousand, three hundred eighty".