305312252 has 24 divisors (see below), whose sum is σ = 611825760. Its totient is φ = 130590720.

The previous prime is 305312251. The next prime is 305312257. The reversal of 305312252 is 252213503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305312251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4124 + ... + 25052.

It is an arithmetic number, because the mean of its divisors is an integer number (25492740).

Almost surely, 2^305312252 is an apocalyptic number.

It is an amenable number.

305312252 is an abundant number, since it is smaller than the sum of its proper divisors (306513508).

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

305312252 is a wasteful number, since it uses less digits than its factorization.

305312252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21461 (or 21459 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 305312252 is about 17473.1866584204. The cubic root of 305312252 is about 673.3611835903.

Adding to 305312252 its reverse (252213503), we get a palindrome (557525755).

The spelling of 305312252 in words is "three hundred five million, three hundred twelve thousand, two hundred fifty-two".