304320232240 has 40 divisors (see below), whose sum is σ = 714157125840. Its totient is φ = 120590443776.

The previous prime is 304320232231. The next prime is 304320232243. The reversal of 304320232240 is 42232023403.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×304320232240² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (304320232243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17767155 + ... + 17784274.

It is an arithmetic number, because the mean of its divisors is an integer number (17853928146).

Almost surely, 2^304320232240 is an apocalyptic number.

It is an amenable number.

304320232240 is an abundant number, since it is smaller than the sum of its proper divisors (409836893600).

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

304320232240 is a wasteful number, since it uses less digits than its factorization.

304320232240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35551549 (or 35551543 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 25.

Adding to 304320232240 its reverse (42232023403), we get a palindrome (346552255643).

The spelling of 304320232240 in words is "three hundred four billion, three hundred twenty million, two hundred thirty-two thousand, two hundred forty".