305403252 has 96 divisors (see below), whose sum is σ = 897039360. Its totient is φ = 78558720.

The previous prime is 305403251. The next prime is 305403257. The reversal of 305403252 is 252304503.

It is a super-2 number, since 2×305403252² = 186542292664351008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305403251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97324 + ... + 100412.

It is an arithmetic number, because the mean of its divisors is an integer number (9344160).

Almost surely, 2^305403252 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 305403252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (448519680).

305403252 is an abundant number, since it is smaller than the sum of its proper divisors (591636108).

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

305403252 is a wasteful number, since it uses less digits than its factorization.

305403252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3221 (or 3219 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 305403252 is about 17475.7904542255. The cubic root of 305403252 is about 673.4280766159.

Adding to 305403252 its reverse (252304503), we get a palindrome (557707755).

The spelling of 305403252 in words is "three hundred five million, four hundred three thousand, two hundred fifty-two".