243040410 has 24 divisors (see below), whose sum is σ = 631905300. Its totient is φ = 64810752.

The previous prime is 243040393. The next prime is 243040439. The reversal of 243040410 is 14040342.

It can be written as a sum of positive squares in 2 ways, for example, as 236944449 + 6095961 = 15393^2 + 2469^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

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 11 ways as a sum of consecutive naturals, for example, 1350135 + ... + 1350314.

Almost surely, 2^243040410 is an apocalyptic number.

243040410 is an abundant number, since it is smaller than the sum of its proper divisors (388864890).

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

243040410 is a wasteful number, since it uses less digits than its factorization.

243040410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2700462 (or 2700459 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 243040410 is about 15589.7533655924. The cubic root of 243040410 is about 624.0597360219.

Adding to 243040410 its reverse (14040342), we get a palindrome (257080752).

The spelling of 243040410 in words is "two hundred forty-three million, forty thousand, four hundred ten".