243530452 has 12 divisors (see below), whose sum is σ = 464921856. Its totient is φ = 110695640.

The previous prime is 243530449. The next prime is 243530459. The reversal of 243530452 is 254035342.

It is a self number, because there is not a number n which added to its sum of digits gives 243530452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243530459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2767348 + ... + 2767435.

It is an arithmetic number, because the mean of its divisors is an integer number (38743488).

Almost surely, 2^243530452 is an apocalyptic number.

243530452 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

243530452 is a deficient number, since it is larger than the sum of its proper divisors (221391404).

243530452 is a wasteful number, since it uses less digits than its factorization.

243530452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5534798 (or 5534796 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 243530452 is about 15605.4622488409. The cubic root of 243530452 is about 624.4788846628.

Adding to 243530452 its reverse (254035342), we get a palindrome (497565794).

The spelling of 243530452 in words is "two hundred forty-three million, five hundred thirty thousand, four hundred fifty-two".