303240040 has 16 divisors (see below), whose sum is σ = 682290180. Its totient is φ = 121296000.

The previous prime is 303240017. The next prime is 303240043. The reversal of 303240040 is 40042303.

It can be written as a sum of positive squares in 2 ways, for example, as 287031364 + 16208676 = 16942^2 + 4026^2 .

It is a junction number, because it is equal to n+sod(n) for n = 303239996 and 303240023.

It is not an unprimeable number, because it can be changed into a prime (303240043) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3790461 + ... + 3790540.

Almost surely, 2^303240040 is an apocalyptic number.

It is an amenable number.

303240040 is an abundant number, since it is smaller than the sum of its proper divisors (379050140).

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

303240040 is a wasteful number, since it uses less digits than its factorization.

303240040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7581012 (or 7581008 counting only the distinct ones).

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

The square root of 303240040 is about 17413.7887893474. The cubic root of 303240040 is about 671.8343140750.

Adding to 303240040 its reverse (40042303), we get a palindrome (343282343).

The spelling of 303240040 in words is "three hundred three million, two hundred forty thousand, forty".