305405304 has 32 divisors (see below), whose sum is σ = 788144640. Its totient is φ = 98517600.

The previous prime is 305405291. The next prime is 305405333. The reversal of 305405304 is 403504503.

It is a happy number.

It is a super-2 number, since 2×305405304² = 186544799422664832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204502 + ... + 205989.

It is an arithmetic number, because the mean of its divisors is an integer number (24629520).

Almost surely, 2^305405304 is an apocalyptic number.

It is an amenable number.

305405304 is an abundant number, since it is smaller than the sum of its proper divisors (482739336).

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

305405304 is a wasteful number, since it uses less digits than its factorization.

305405304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410531 (or 410527 counting only the distinct ones).

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

The square root of 305405304 is about 17475.8491639176. The cubic root of 305405304 is about 673.4295848636.

Adding to 305405304 its reverse (403504503), we get a palindrome (708909807).

The spelling of 305405304 in words is "three hundred five million, four hundred five thousand, three hundred four".