243930900 has 72 divisors (see below), whose sum is σ = 710405920. Its totient is φ = 64621440.

The previous prime is 243930881. The next prime is 243930913. The reversal of 243930900 is 9039342.

It is a super-3 number, since 3×243930900³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44511 + ... + 49689.

Almost surely, 2^243930900 is an apocalyptic number.

243930900 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 243930900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355202960).

243930900 is an abundant number, since it is smaller than the sum of its proper divisors (466475020).

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

243930900 is a wasteful number, since it uses less digits than its factorization.

243930900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5353 (or 5346 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 243930900 is about 15618.2873580940. The cubic root of 243930900 is about 624.8209833965.

The spelling of 243930900 in words is "two hundred forty-three million, nine hundred thirty thousand, nine hundred".