303404020 has 12 divisors (see below), whose sum is σ = 637148484. Its totient is φ = 121361600.

The previous prime is 303404011. The next prime is 303404053. The reversal of 303404020 is 20404303.

303404020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 174081636 + 129322384 = 13194^2 + 11372^2 .

It is a junction number, because it is equal to n+sod(n) for n = 303403985 and 303404003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7585081 + ... + 7585120.

It is an arithmetic number, because the mean of its divisors is an integer number (53095707).

Almost surely, 2^303404020 is an apocalyptic number.

It is an amenable number.

303404020 is an abundant number, since it is smaller than the sum of its proper divisors (333744464).

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

303404020 is a wasteful number, since it uses less digits than its factorization.

303404020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15170210 (or 15170208 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 303404020 is about 17418.4964907997. The cubic root of 303404020 is about 671.9553925653.

Adding to 303404020 its reverse (20404303), we get a palindrome (323808323).

The spelling of 303404020 in words is "three hundred three million, four hundred four thousand, twenty".