303240420 has 108 divisors (see below), whose sum is σ = 1070036604. Its totient is φ = 69310080.

The previous prime is 303240409. The next prime is 303240433. The reversal of 303240420 is 24042303.

303240420 is a `hidden beast` number, since 3 + 0 + 3 + 240 + 420 = 666.

303240420 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 64352484 + 238887936 = 8022^2 + 15456^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 303240393 and 303240402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8371 + ... + 26010.

Almost surely, 2^303240420 is an apocalyptic number.

303240420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

303240420 is an abundant number, since it is smaller than the sum of its proper divisors (766796184).

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

303240420 is a wasteful number, since it uses less digits than its factorization.

303240420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34410 (or 34398 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 303240420 is about 17413.7997002377. The cubic root of 303240420 is about 671.8345947073.

Adding to 303240420 its reverse (24042303), we get a palindrome (327282723).

The spelling of 303240420 in words is "three hundred three million, two hundred forty thousand, four hundred twenty".