30503240520 has 128 divisors (see below), whose sum is σ = 96451948800. Its totient is φ = 7705478144.

The previous prime is 30503240497. The next prime is 30503240533. The reversal of 30503240520 is 2504230503.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101749 + ... + 267131.

It is an arithmetic number, because the mean of its divisors is an integer number (753530850).

Almost surely, 2^30503240520 is an apocalyptic number.

30503240520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30503240520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48225974400).

30503240520 is an abundant number, since it is smaller than the sum of its proper divisors (65948708280).

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

30503240520 is a wasteful number, since it uses less digits than its factorization.

30503240520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165479 (or 165475 counting only the distinct ones).

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

The spelling of 30503240520 in words is "thirty billion, five hundred three million, two hundred forty thousand, five hundred twenty".