243474320 has 80 divisors (see below), whose sum is σ = 596426112. Its totient is φ = 92252160.

The previous prime is 243474317. The next prime is 243474331. The reversal of 243474320 is 23474342.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 207335 + ... + 208505.

Almost surely, 2^243474320 is an apocalyptic number.

243474320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243474320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298213056).

243474320 is an abundant number, since it is smaller than the sum of its proper divisors (352951792).

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

243474320 is a wasteful number, since it uses less digits than its factorization.

243474320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320 (or 1314 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 29.

The square root of 243474320 is about 15603.6636723559. The cubic root of 243474320 is about 624.4309016940.

The spelling of 243474320 in words is "two hundred forty-three million, four hundred seventy-four thousand, three hundred twenty".