243265400 has 144 divisors (see below), whose sum is σ = 667077840. Its totient is φ = 82252800.

The previous prime is 243265381. The next prime is 243265439. The reversal of 243265400 is 4562342.

It is a self number, because there is not a number n which added to its sum of digits gives 243265400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1009280 + ... + 1009520.

It is an arithmetic number, because the mean of its divisors is an integer number (4632485).

Almost surely, 2^243265400 is an apocalyptic number.

243265400 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 243265400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333538920).

243265400 is an abundant number, since it is smaller than the sum of its proper divisors (423812440).

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

243265400 is a wasteful number, since it uses less digits than its factorization.

243265400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 243265400 is about 15596.9676540025. The cubic root of 243265400 is about 624.2522470750.

The spelling of 243265400 in words is "two hundred forty-three million, two hundred sixty-five thousand, four hundred".