304020133440440 has 32 divisors (see below), whose sum is σ = 720047684466000. Its totient is φ = 115207629513984.

The previous prime is 304020133440409. The next prime is 304020133440461. The reversal of 304020133440440 is 44044331020403.

It is a junction number, because it is equal to n+sod(n) for n = 304020133440397 and 304020133440406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200013244925 + ... + 200013246444.

Almost surely, 2^{304020133440440} is an apocalyptic number.

It is an amenable number.

304020133440440 is an abundant number, since it is smaller than the sum of its proper divisors (416027551025560).

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

304020133440440 is a wasteful number, since it uses less digits than its factorization.

304020133440440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400026491399 (or 400026491395 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 304020133440440 its reverse (44044331020403), we get a palindrome (348064464460843).

The spelling of 304020133440440 in words is "three hundred four trillion, twenty billion, one hundred thirty-three million, four hundred forty thousand, four hundred forty".