243915252 has 48 divisors (see below), whose sum is σ = 688705920. Its totient is φ = 65590272.

The previous prime is 243915251. The next prime is 243915277. The reversal of 243915252 is 252519342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243915251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83977 + ... + 86832.

It is an arithmetic number, because the mean of its divisors is an integer number (14348040).

Almost surely, 2^243915252 is an apocalyptic number.

It is an amenable number.

243915252 is an abundant number, since it is smaller than the sum of its proper divisors (444790668).

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

243915252 is a wasteful number, since it uses less digits than its factorization.

243915252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170840 (or 170838 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 243915252 is about 15617.7863988467. The cubic root of 243915252 is about 624.8076224982.

The spelling of 243915252 in words is "two hundred forty-three million, nine hundred fifteen thousand, two hundred fifty-two".