305240520032 has 72 divisors (see below), whose sum is σ = 735847754040. Its totient is φ = 123932229120.

The previous prime is 305240520031. The next prime is 305240520047. The reversal of 305240520032 is 230025042503.

It is a junction number, because it is equal to n+sod(n) for n = 305240519983 and 305240520010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305240520031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5093069 + ... + 5152652.

It is an arithmetic number, because the mean of its divisors is an integer number (10220107695).

Almost surely, 2^305240520032 is an apocalyptic number.

305240520032 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

305240520032 is an abundant number, since it is smaller than the sum of its proper divisors (430607234008).

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

305240520032 is a wasteful number, since it uses less digits than its factorization.

305240520032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10245764 (or 10245749 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 26.

Adding to 305240520032 its reverse (230025042503), we get a palindrome (535265562535).

The spelling of 305240520032 in words is "three hundred five billion, two hundred forty million, five hundred twenty thousand, thirty-two".