305012320 has 48 divisors (see below), whose sum is σ = 758525040. Its totient is φ = 115582464.

The previous prime is 305012303. The next prime is 305012327. The reversal of 305012320 is 23210503.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 305012294 and 305012303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305012327) 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, 47127 + ... + 53206.

It is an arithmetic number, because the mean of its divisors is an integer number (15802605).

Almost surely, 2^305012320 is an apocalyptic number.

It is an amenable number.

305012320 is an abundant number, since it is smaller than the sum of its proper divisors (453512720).

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

305012320 is a wasteful number, since it uses less digits than its factorization.

305012320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100367 (or 100359 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 305012320 is about 17464.6019135851. The cubic root of 305012320 is about 673.1406129714.

Adding to 305012320 its reverse (23210503), we get a palindrome (328222823).

The spelling of 305012320 in words is "three hundred five million, twelve thousand, three hundred twenty".