243769328 has 40 divisors (see below), whose sum is σ = 517633536. Its totient is φ = 110289600.

The previous prime is 243769321. The next prime is 243769367. The reversal of 243769328 is 823967342.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243769321) by changing a digit.

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, 36143 + ... + 42353.

Almost surely, 2^243769328 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 243769328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258816768).

243769328 is an abundant number, since it is smaller than the sum of its proper divisors (273864208).

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

243769328 is a wasteful number, since it uses less digits than its factorization.

243769328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6453 (or 6447 counting only the distinct ones).

The product of its digits is 435456, while the sum is 44.

The square root of 243769328 is about 15613.1139751172. The cubic root of 243769328 is about 624.6829991372.

The spelling of 243769328 in words is "two hundred forty-three million, seven hundred sixty-nine thousand, three hundred twenty-eight".