30805596 has 72 divisors (see below), whose sum is σ = 82830384. Its totient is φ = 10005120.

The previous prime is 30805583. The next prime is 30805603. The reversal of 30805596 is 69550803.

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

It is a self number, because there is not a number n which added to its sum of digits gives 30805596.

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 23 ways as a sum of consecutive naturals, for example, 39466 + ... + 40238.

It is an arithmetic number, because the mean of its divisors is an integer number (1150422).

Almost surely, 2^30805596 is an apocalyptic number.

30805596 is a gapful number since it is divisible by the number (36) 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 30805596, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41415192).

30805596 is an abundant number, since it is smaller than the sum of its proper divisors (52024788).

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

30805596 is a wasteful number, since it uses less digits than its factorization.

30805596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833 (or 819 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 30805596 is about 5550.2789119106. The cubic root of 30805596 is about 313.4800243677.

The spelling of 30805596 in words is "thirty million, eight hundred five thousand, five hundred ninety-six".