304401020440 has 128 divisors (see below), whose sum is σ = 765526982400. Its totient is φ = 107994565120.

The previous prime is 304401020437. The next prime is 304401020491. The reversal of 304401020440 is 44020104403.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4137819 + ... + 4210741.

It is an arithmetic number, because the mean of its divisors is an integer number (5980679550).

Almost surely, 2^304401020440 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 304401020440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (382763491200).

304401020440 is an abundant number, since it is smaller than the sum of its proper divisors (461125961960).

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

304401020440 is a wasteful number, since it uses less digits than its factorization.

304401020440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73177 (or 73173 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 304401020440 its reverse (44020104403), we get a palindrome (348421124843).

The spelling of 304401020440 in words is "three hundred four billion, four hundred one million, twenty thousand, four hundred forty".