243969376 has 48 divisors (see below), whose sum is σ = 551093760. Its totient is φ = 104146560.

The previous prime is 243969371. The next prime is 243969377. The reversal of 243969376 is 673969342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243969371) 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 7 ways as a sum of consecutive naturals, for example, 58695 + ... + 62713.

It is an arithmetic number, because the mean of its divisors is an integer number (11481120).

Almost surely, 2^243969376 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 243969376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275546880).

243969376 is an abundant number, since it is smaller than the sum of its proper divisors (307124384).

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

243969376 is a wasteful number, since it uses less digits than its factorization.

243969376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4307 (or 4299 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 49.

The square root of 243969376 is about 15619.5190707012. The cubic root of 243969376 is about 624.8538333392.

It can be divided in two parts, 2439 and 69376, that multiplied together give a square (169208064 = 13008²).

The spelling of 243969376 in words is "two hundred forty-three million, nine hundred sixty-nine thousand, three hundred seventy-six".