30985308 has 48 divisors (see below), whose sum is σ = 80697120. Its totient is φ = 10281600.

The previous prime is 30985277. The next prime is 30985313. The reversal of 30985308 is 80358903.

30985308 is a `hidden beast` number, since 30 + 98 + 530 + 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 15 ways as a sum of consecutive naturals, for example, 29838 + ... + 30858.

It is an arithmetic number, because the mean of its divisors is an integer number (1681190).

Almost surely, 2^30985308 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 30985308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40348560).

30985308 is an abundant number, since it is smaller than the sum of its proper divisors (49711812).

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

30985308 is a wasteful number, since it uses less digits than its factorization.

30985308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315 (or 1307 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 30985308 is about 5566.4448259190. Note that the first 3 decimals coincide. The cubic root of 30985308 is about 314.0884303384.

The spelling of 30985308 in words is "thirty million, nine hundred eighty-five thousand, three hundred eight".