303400140 has 24 divisors (see below), whose sum is σ = 849520560. Its totient is φ = 80906688.

The previous prime is 303400133. The next prime is 303400159. The reversal of 303400140 is 41004303.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 7 ways as a sum of consecutive naturals, for example, 2528275 + ... + 2528394.

It is an arithmetic number, because the mean of its divisors is an integer number (35396690).

Almost surely, 2^303400140 is an apocalyptic number.

303400140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

303400140 is an abundant number, since it is smaller than the sum of its proper divisors (546120420).

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

303400140 is a wasteful number, since it uses less digits than its factorization.

303400140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5056681 (or 5056679 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 303400140 is about 17418.3851145851. The cubic root of 303400140 is about 671.9525281800.

Adding to 303400140 its reverse (41004303), we get a palindrome (344404443).

The spelling of 303400140 in words is "three hundred three million, four hundred thousand, one hundred forty".