243068420 has 72 divisors (see below), whose sum is σ = 600137496. Its totient is φ = 82446336.

The previous prime is 243068407. The next prime is 243068437. The reversal of 243068420 is 24860342.

243068420 = T₁₅₅ + T₁₅₆ + ... + T₁₁₃₄.

It can be written as a sum of positive squares in 4 ways, for example, as 16144324 + 226924096 = 4018^2 + 15064^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93782 + ... + 96338.

It is an arithmetic number, because the mean of its divisors is an integer number (8335243).

Almost surely, 2^243068420 is an apocalyptic number.

243068420 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 243068420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300068748).

243068420 is an abundant number, since it is smaller than the sum of its proper divisors (357069076).

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

243068420 is a wasteful number, since it uses less digits than its factorization.

243068420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2677 (or 2668 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 243068420 is about 15590.6516861868. The cubic root of 243068420 is about 624.0837090472.

The spelling of 243068420 in words is "two hundred forty-three million, sixty-eight thousand, four hundred twenty".