243326064 has 60 divisors (see below), whose sum is σ = 635801816. Its totient is φ = 80188416.

The previous prime is 243326063. The next prime is 243326087. The reversal of 243326064 is 460623342.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243326063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 612714 + ... + 613110.

Almost surely, 2^243326064 is an apocalyptic number.

243326064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243326064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317900908).

243326064 is an abundant number, since it is smaller than the sum of its proper divisors (392475752).

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

243326064 is a wasteful number, since it uses less digits than its factorization.

243326064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

The square root of 243326064 is about 15598.9122697706. The cubic root of 243326064 is about 624.3041334658.

The spelling of 243326064 in words is "two hundred forty-three million, three hundred twenty-six thousand, sixty-four".