303020420 has 24 divisors (see below), whose sum is σ = 658287000. Its totient is φ = 117028352.

The previous prime is 303020413. The next prime is 303020429. The reversal of 303020420 is 24020303.

It can be written as a sum of positive squares in 4 ways, for example, as 538756 + 302481664 = 734^2 + 17392^2 .

It is a junction number, because it is equal to n+sod(n) for n = 303020395 and 303020404.

It is not an unprimeable number, because it can be changed into a prime (303020429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260645 + ... + 261804.

It is an arithmetic number, because the mean of its divisors is an integer number (27428625).

Almost surely, 2^303020420 is an apocalyptic number.

It is an amenable number.

303020420 is an abundant number, since it is smaller than the sum of its proper divisors (355266580).

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

303020420 is a wasteful number, since it uses less digits than its factorization.

303020420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522487 (or 522485 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 303020420 is about 17407.4817248217. The cubic root of 303020420 is about 671.6720840841.

Adding to 303020420 its reverse (24020303), we get a palindrome (327040723).

The spelling of 303020420 in words is "three hundred three million, twenty thousand, four hundred twenty".