303421020 has 48 divisors (see below), whose sum is σ = 970948608. Its totient is φ = 69353280.

The previous prime is 303421009. The next prime is 303421043. The reversal of 303421020 is 20124303.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360796 + ... + 361635.

It is an arithmetic number, because the mean of its divisors is an integer number (20228096).

Almost surely, 2^303421020 is an apocalyptic number.

303421020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

303421020 is an abundant number, since it is smaller than the sum of its proper divisors (667527588).

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

303421020 is a wasteful number, since it uses less digits than its factorization.

303421020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722450 (or 722448 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 303421020 is about 17418.9844709730. The cubic root of 303421020 is about 671.9679424191.

Adding to 303421020 its reverse (20124303), we get a palindrome (323545323).

The spelling of 303421020 in words is "three hundred three million, four hundred twenty-one thousand, twenty".