305434336 has 48 divisors (see below), whose sum is σ = 621314064. Its totient is φ = 147723264.

The previous prime is 305434333. The next prime is 305434357. The reversal of 305434336 is 633434503.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 305434298 and 305434307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305434333) 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, 122575 + ... + 125041.

It is an arithmetic number, because the mean of its divisors is an integer number (12944043).

Almost surely, 2^305434336 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 305434336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310657032).

305434336 is an abundant number, since it is smaller than the sum of its proper divisors (315879728).

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

305434336 is a wasteful number, since it uses less digits than its factorization.

305434336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2603 (or 2595 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 31.

The square root of 305434336 is about 17476.6797762046. The cubic root of 305434336 is about 673.4509230526.

Adding to 305434336 its reverse (633434503), we get a palindrome (938868839).

The spelling of 305434336 in words is "three hundred five million, four hundred thirty-four thousand, three hundred thirty-six".