243025400 has 48 divisors (see below), whose sum is σ = 567672000. Its totient is φ = 96756480.

The previous prime is 243025397. The next prime is 243025439. The reversal of 243025400 is 4520342.

It is a super-2 number, since 2×243025400² = 118122690090320000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41876 + ... + 47324.

It is an arithmetic number, because the mean of its divisors is an integer number (11826500).

Almost surely, 2^243025400 is an apocalyptic number.

243025400 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 243025400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283836000).

243025400 is an abundant number, since it is smaller than the sum of its proper divisors (324646600).

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

243025400 is a wasteful number, since it uses less digits than its factorization.

243025400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5688 (or 5679 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 243025400 is about 15589.2719522112. The cubic root of 243025400 is about 624.0468885980.

Adding to 243025400 its reverse (4520342), we get a palindrome (247545742).

The spelling of 243025400 in words is "two hundred forty-three million, twenty-five thousand, four hundred".