30805488 has 160 divisors (see below), whose sum is σ = 103326720. Its totient is φ = 8605440.

The previous prime is 30805477. The next prime is 30805519. The reversal of 30805488 is 88450803.

30805488 is a `hidden beast` number, since 30 + 80 + 548 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 184381 + ... + 184547.

It is an arithmetic number, because the mean of its divisors is an integer number (645792).

Almost surely, 2^30805488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30805488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51663360).

30805488 is an abundant number, since it is smaller than the sum of its proper divisors (72521232).

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

30805488 is a wasteful number, since it uses less digits than its factorization.

30805488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 30805488 is about 5550.2691826613. The cubic root of 30805488 is about 313.4796580286.

The spelling of 30805488 in words is "thirty million, eight hundred five thousand, four hundred eighty-eight".