303945240 has 64 divisors (see below), whose sum is σ = 931253760. Its totient is φ = 79326080.

The previous prime is 303945221. The next prime is 303945241. The reversal of 303945240 is 42549303.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 303945198 and 303945207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303945241) 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, 21306 + ... + 32585.

It is an arithmetic number, because the mean of its divisors is an integer number (14550840).

Almost surely, 2^303945240 is an apocalyptic number.

303945240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

303945240 is an abundant number, since it is smaller than the sum of its proper divisors (627308520).

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

303945240 is a wasteful number, since it uses less digits than its factorization.

303945240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53952 (or 53948 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 303945240 is about 17434.0253527405. The cubic root of 303945240 is about 672.3547057395.

The spelling of 303945240 in words is "three hundred three million, nine hundred forty-five thousand, two hundred forty".