305043003020 has 96 divisors (see below), whose sum is σ = 791661330432. Its totient is φ = 96339667968.

The previous prime is 305043002893. The next prime is 305043003077. The reversal of 305043003020 is 20300340503.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 305043002983 and 305043003001.

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, 1251644 + ... + 1475363.

It is an arithmetic number, because the mean of its divisors is an integer number (8246472192).

Almost surely, 2^305043003020 is an apocalyptic number.

It is an amenable number.

305043003020 is an abundant number, since it is smaller than the sum of its proper divisors (486618327412).

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

305043003020 is a wasteful number, since it uses less digits than its factorization.

305043003020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2727087 (or 2727085 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 20.

Adding to 305043003020 its reverse (20300340503), we get a palindrome (325343343523).

The spelling of 305043003020 in words is "three hundred five billion, forty-three million, three thousand, twenty".