305412205240 has 16 divisors (see below), whose sum is σ = 687177461880. Its totient is φ = 122164882080.

The previous prime is 305412205183. The next prime is 305412205253. The reversal of 305412205240 is 42502214503.

It is a super-4 number, since 4×305412205240⁴ (a number of 47 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 305412205199 and 305412205208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3817652526 + ... + 3817652605.

Almost surely, 2^305412205240 is an apocalyptic number.

It is an amenable number.

305412205240 is an abundant number, since it is smaller than the sum of its proper divisors (381765256640).

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

305412205240 is a wasteful number, since it uses less digits than its factorization.

305412205240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7635305142 (or 7635305138 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 305412205240 its reverse (42502214503), we get a palindrome (347914419743).

The spelling of 305412205240 in words is "three hundred five billion, four hundred twelve million, two hundred five thousand, two hundred forty".