30438845520 has 80 divisors (see below), whose sum is σ = 96140846592. Its totient is φ = 7963870720.

The previous prime is 30438845513. The next prime is 30438845531. The reversal of 30438845520 is 2554883403.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1183776 + ... + 1209215.

Almost surely, 2^30438845520 is an apocalyptic number.

30438845520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30438845520 is an abundant number, since it is smaller than the sum of its proper divisors (65702001072).

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

30438845520 is a wasteful number, since it uses less digits than its factorization.

30438845520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393060 (or 2393054 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 42.

The spelling of 30438845520 in words is "thirty billion, four hundred thirty-eight million, eight hundred forty-five thousand, five hundred twenty".