243859456 has 51 divisors (see below), whose sum is σ = 495841593. Its totient is φ = 119930880.

The previous prime is 243859439. The next prime is 243859459. The reversal of 243859456 is 654958342.

The square root of 243859456 is 15616.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 7929856 + 235929600 = 2816^2 + 15360^2 .

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243859459) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3997666 + ... + 3997726.

Almost surely, 2^243859456 is an apocalyptic number.

243859456 is the 15616-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243859456

243859456 is an abundant number, since it is smaller than the sum of its proper divisors (251982137).

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

243859456 is an frugal number, since it uses more digits than its factorization.

243859456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 63 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 46.

The cubic root of 243859456 is about 624.7599769541.

The spelling of 243859456 in words is "two hundred forty-three million, eight hundred fifty-nine thousand, four hundred fifty-six".