303720340 has 48 divisors (see below), whose sum is σ = 795199104. Its totient is φ = 94665600.

The previous prime is 303720337. The next prime is 303720349. The reversal of 303720340 is 43027303.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303720349) 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 15 ways as a sum of consecutive naturals, for example, 97071 + ... + 100150.

It is an arithmetic number, because the mean of its divisors is an integer number (16566648).

Almost surely, 2^303720340 is an apocalyptic number.

It is an amenable number.

303720340 is an abundant number, since it is smaller than the sum of its proper divisors (491478764).

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

303720340 is a wasteful number, since it uses less digits than its factorization.

303720340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197248 (or 197246 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 22.

The square root of 303720340 is about 17427.5741283748. The cubic root of 303720340 is about 672.1888316887.

Adding to 303720340 its reverse (43027303), we get a palindrome (346747643).

The spelling of 303720340 in words is "three hundred three million, seven hundred twenty thousand, three hundred forty".