305041133440 has 64 divisors (see below), whose sum is σ = 729461074320. Its totient is φ = 121979289600.

The previous prime is 305041133431. The next prime is 305041133447. The reversal of 305041133440 is 44331140503.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 305041133399 and 305041133408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305041133447) 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, 2080135 + ... + 2221945.

Almost surely, 2^305041133440 is an apocalyptic number.

It is an amenable number.

305041133440 is an abundant number, since it is smaller than the sum of its proper divisors (424419940880).

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

305041133440 is a wasteful number, since it uses less digits than its factorization.

305041133440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145191 (or 145179 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 305041133440 its reverse (44331140503), we get a palindrome (349372273943).

The spelling of 305041133440 in words is "three hundred five billion, forty-one million, one hundred thirty-three thousand, four hundred forty".