243754434 has 80 divisors (see below), whose sum is σ = 680999616. Its totient is φ = 63309600.

The previous prime is 243754403. The next prime is 243754463. The reversal of 243754434 is 434457342.

243754434 = 2937² + 2938² + ... + 2964².

243754434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2704 + ... + 22244.

Almost surely, 2^243754434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243754434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340499808).

243754434 is an abundant number, since it is smaller than the sum of its proper divisors (437245182).

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

243754434 is a wasteful number, since it uses less digits than its factorization.

243754434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19573 (or 19564 counting only the distinct ones).

The product of its digits is 161280, while the sum is 36.

The square root of 243754434 is about 15612.6369969970. The cubic root of 243754434 is about 624.6702764290.

The spelling of 243754434 in words is "two hundred forty-three million, seven hundred fifty-four thousand, four hundred thirty-four".