305240520030 has 64 divisors (see below), whose sum is σ = 735551366400. Its totient is φ = 81067320576.

The previous prime is 305240520007. The next prime is 305240520031. The reversal of 305240520030 is 30025042503.

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 31 ways as a sum of consecutive naturals, for example, 18270621 + ... + 18287319.

It is an arithmetic number, because the mean of its divisors is an integer number (11492990100).

Almost surely, 2^305240520030 is an apocalyptic number.

305240520030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

305240520030 is an abundant number, since it is smaller than the sum of its proper divisors (430310846370).

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

305240520030 is a wasteful number, since it uses less digits than its factorization.

305240520030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19145.

The product of its (nonzero) digits is 3600, while the sum is 24.

Adding to 305240520030 its reverse (30025042503), we get a palindrome (335265562533).

The spelling of 305240520030 in words is "three hundred five billion, two hundred forty million, five hundred twenty thousand, thirty".