243233452 has 72 divisors (see below), whose sum is σ = 546004368. Its totient is φ = 93744000.

The previous prime is 243233447. The next prime is 243233477. The reversal of 243233452 is 254332342.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 243233452.

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, 217198 + ... + 218314.

It is an arithmetic number, because the mean of its divisors is an integer number (7583394).

Almost surely, 2^243233452 is an apocalyptic number.

243233452 is a gapful number since it is divisible by the number (22) 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 243233452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273002184).

243233452 is an abundant number, since it is smaller than the sum of its proper divisors (302770916).

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

243233452 is a wasteful number, since it uses less digits than its factorization.

243233452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247 (or 1238 counting only the distinct ones).

The product of its digits is 17280, while the sum is 28.

The square root of 243233452 is about 15595.9434469352. The cubic root of 243233452 is about 624.2249182346.

Adding to 243233452 its reverse (254332342), we get a palindrome (497565794).

The spelling of 243233452 in words is "two hundred forty-three million, two hundred thirty-three thousand, four hundred fifty-two".