243738072 has 80 divisors (see below), whose sum is σ = 686113560. Its totient is φ = 80839296.

The previous prime is 243738037. The next prime is 243738083. The reversal of 243738072 is 270837342.

243738072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 146268 + ... + 147924.

Almost surely, 2^243738072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243738072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (343056780).

243738072 is an abundant number, since it is smaller than the sum of its proper divisors (442375488).

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

243738072 is a wasteful number, since it uses less digits than its factorization.

243738072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1902 (or 1889 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 243738072 is about 15612.1129895988. The cubic root of 243738072 is about 624.6562991329.

The spelling of 243738072 in words is "two hundred forty-three million, seven hundred thirty-eight thousand, seventy-two".