243448900 has 72 divisors (see below), whose sum is σ = 571282880. Its totient is φ = 89735040.

The previous prime is 243448897. The next prime is 243448901. The reversal of 243448900 is 9844342.

It is a super-2 number, since 2×243448900² = 118534733822420000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243448901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68569 + ... + 72031.

Almost surely, 2^243448900 is an apocalyptic number.

243448900 is a gapful number since it is divisible by the number (20) 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 243448900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285641440).

243448900 is an abundant number, since it is smaller than the sum of its proper divisors (327833980).

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

243448900 is a wasteful number, since it uses less digits than its factorization.

243448900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533 (or 3526 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 243448900 is about 15602.8490988024. The cubic root of 243448900 is about 624.4091696472.

The spelling of 243448900 in words is "two hundred forty-three million, four hundred forty-eight thousand, nine hundred".