243371264 has 72 divisors (see below), whose sum is σ = 503314560. Its totient is φ = 117383168.

The previous prime is 243371231. The next prime is 243371267. The reversal of 243371264 is 462173342.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 243371264.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243371267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1359527 + ... + 1359705.

It is an arithmetic number, because the mean of its divisors is an integer number (6990480).

Almost surely, 2^243371264 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 243371264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251657280).

243371264 is an abundant number, since it is smaller than the sum of its proper divisors (259943296).

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

243371264 is a wasteful number, since it uses less digits than its factorization.

243371264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355 (or 341 counting only the distinct ones).

The product of its digits is 24192, while the sum is 32.

The square root of 243371264 is about 15600.3610214636. The cubic root of 243371264 is about 624.3427877709.

The spelling of 243371264 in words is "two hundred forty-three million, three hundred seventy-one thousand, two hundred sixty-four".