243775472 has 40 divisors (see below), whose sum is σ = 498480000. Its totient is φ = 115169472.

The previous prime is 243775451. The next prime is 243775487. The reversal of 243775472 is 274577342.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150893 + ... + 152499.

It is an arithmetic number, because the mean of its divisors is an integer number (12462000).

Almost surely, 2^243775472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243775472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249240000).

243775472 is an abundant number, since it is smaller than the sum of its proper divisors (254704528).

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

243775472 is a wasteful number, since it uses less digits than its factorization.

243775472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133 (or 2127 counting only the distinct ones).

The product of its digits is 329280, while the sum is 41.

The square root of 243775472 is about 15613.3107315521. The cubic root of 243775472 is about 624.6882472956.

The spelling of 243775472 in words is "two hundred forty-three million, seven hundred seventy-five thousand, four hundred seventy-two".