243506424 has 32 divisors (see below), whose sum is σ = 695733120. Its totient is φ = 69573216.

The previous prime is 243506407. The next prime is 243506429. The reversal of 243506424 is 424605342.

243506424 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 243506391 and 243506400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243506429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 724554 + ... + 724889.

It is an arithmetic number, because the mean of its divisors is an integer number (21741660).

Almost surely, 2^243506424 is an apocalyptic number.

243506424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

243506424 is an abundant number, since it is smaller than the sum of its proper divisors (452226696).

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

243506424 is a wasteful number, since it uses less digits than its factorization.

243506424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1449459 (or 1449455 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 243506424 is about 15604.6923712068. The cubic root of 243506424 is about 624.4583458595.

The spelling of 243506424 in words is "two hundred forty-three million, five hundred six thousand, four hundred twenty-four".