30885327840 has 48 divisors (see below), whose sum is σ = 97288784208. Its totient is φ = 8236087296.

The previous prime is 30885327833. The next prime is 30885327871. The reversal of 30885327840 is 4872358803.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 30885327840.

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 7 ways as a sum of consecutive naturals, for example, 32171737 + ... + 32172696.

It is an arithmetic number, because the mean of its divisors is an integer number (2026849671).

Almost surely, 2^30885327840 is an apocalyptic number.

30885327840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30885327840 is an abundant number, since it is smaller than the sum of its proper divisors (66403456368).

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

30885327840 is a wasteful number, since it uses less digits than its factorization.

30885327840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64344451 (or 64344443 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 30885327840 in words is "thirty billion, eight hundred eighty-five million, three hundred twenty-seven thousand, eight hundred forty".