306030080 has 80 divisors (see below), whose sum is σ = 739064304. Its totient is φ = 121528320.

The previous prime is 306030077. The next prime is 306030091. The reversal of 306030080 is 80030603.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442535 + ... + 443225.

Almost surely, 2^306030080 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 306030080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (369532152).

306030080 is an abundant number, since it is smaller than the sum of its proper divisors (433034224).

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

306030080 is an equidigital number, since it uses as much as digits as its factorization.

306030080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887 (or 871 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 306030080 is about 17493.7154429812. The cubic root of 306030080 is about 673.8884898599. Note that the first 3 decimals are identical.

Adding to 306030080 its reverse (80030603), we get a palindrome (386060683).

The spelling of 306030080 in words is "three hundred six million, thirty thousand, eighty".