243804672 has 120 divisors (see below), whose sum is σ = 710219796. Its totient is φ = 80510976.

The previous prime is 243804661. The next prime is 243804689. The reversal of 243804672 is 276408342.

It can be written as a sum of positive squares in 2 ways, for example, as 231526656 + 12278016 = 15216^2 + 3504^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 723288 + ... + 723624.

Almost surely, 2^243804672 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 243804672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355109898).

243804672 is an abundant number, since it is smaller than the sum of its proper divisors (466415124).

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

243804672 is a wasteful number, since it uses less digits than its factorization.

243804672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518 (or 499 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 243804672 is about 15614.2458031120. The cubic root of 243804672 is about 624.7131885095.

The spelling of 243804672 in words is "two hundred forty-three million, eight hundred four thousand, six hundred seventy-two".