243072736 has 24 divisors (see below), whose sum is σ = 493988544. Its totient is φ = 117615360.

The previous prime is 243072691. The next prime is 243072769. The reversal of 243072736 is 637270342.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121525 + ... + 123508.

It is an arithmetic number, because the mean of its divisors is an integer number (20582856).

Almost surely, 2^243072736 is an apocalyptic number.

It is an amenable number.

243072736 is an abundant number, since it is smaller than the sum of its proper divisors (250915808).

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

243072736 is a wasteful number, since it uses less digits than its factorization.

243072736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245074 (or 245066 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 34.

The square root of 243072736 is about 15590.7901018518. The cubic root of 243072736 is about 624.0874028348.

The spelling of 243072736 in words is "two hundred forty-three million, seventy-two thousand, seven hundred thirty-six".