243938000 has 80 divisors (see below), whose sum is σ = 615603456. Its totient is φ = 93315200.

The previous prime is 243937973. The next prime is 243938021. The reversal of 243938000 is 839342.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43349 + ... + 48651.

Almost surely, 2^243938000 is an apocalyptic number.

243938000 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 243938000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307801728).

243938000 is an abundant number, since it is smaller than the sum of its proper divisors (371665456).

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

243938000 is a wasteful number, since it uses less digits than its factorization.

243938000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5349 (or 5333 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 243938000 is about 15618.5146540892. The cubic root of 243938000 is about 624.8270454765.

The spelling of 243938000 in words is "two hundred forty-three million, nine hundred thirty-eight thousand".