305133252 has 12 divisors (see below), whose sum is σ = 711977616. Its totient is φ = 101711080.

The previous prime is 305133251. The next prime is 305133281. The reversal of 305133252 is 252331503.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (305133251) 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, 12713874 + ... + 12713897.

It is an arithmetic number, because the mean of its divisors is an integer number (59331468).

Almost surely, 2^305133252 is an apocalyptic number.

It is an amenable number.

305133252 is an abundant number, since it is smaller than the sum of its proper divisors (406844364).

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

305133252 is a wasteful number, since it uses less digits than its factorization.

305133252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25427778 (or 25427776 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 305133252 is about 17468.0637736413. The cubic root of 305133252 is about 673.2295640062.

Adding to 305133252 its reverse (252331503), we get a palindrome (557464755).

The spelling of 305133252 in words is "three hundred five million, one hundred thirty-three thousand, two hundred fifty-two".