304020444 has 96 divisors (see below), whose sum is σ = 919098880. Its totient is φ = 75955968.

The previous prime is 304020397. The next prime is 304020481. The reversal of 304020444 is 444020403.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 304020444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13422 + ... + 28074.

Almost surely, 2^304020444 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 304020444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (459549440).

304020444 is an abundant number, since it is smaller than the sum of its proper divisors (615078436).

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

304020444 is a wasteful number, since it uses less digits than its factorization.

304020444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14699 (or 14697 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 304020444 is about 17436.1820362142. The cubic root of 304020444 is about 672.4101538783.

Adding to 304020444 its reverse (444020403), we get a palindrome (748040847).

The spelling of 304020444 in words is "three hundred four million, twenty thousand, four hundred forty-four".