304220140 has 24 divisors (see below), whose sum is σ = 730128672. Its totient is φ = 104304000.

The previous prime is 304220093. The next prime is 304220167. The reversal of 304220140 is 41022403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1086361 + ... + 1086640.

It is an arithmetic number, because the mean of its divisors is an integer number (30422028).

Almost surely, 2^304220140 is an apocalyptic number.

It is an amenable number.

304220140 is an abundant number, since it is smaller than the sum of its proper divisors (425908532).

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

304220140 is a wasteful number, since it uses less digits than its factorization.

304220140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173017 (or 2173015 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 304220140 is about 17441.9075791612. The cubic root of 304220140 is about 672.5573459848.

Adding to 304220140 its reverse (41022403), we get a palindrome (345242543).

The spelling of 304220140 in words is "three hundred four million, two hundred twenty thousand, one hundred forty".