30986408 has 32 divisors (see below), whose sum is σ = 59261760. Its totient is φ = 15187200.

The previous prime is 30986401. The next prime is 30986419. The reversal of 30986408 is 80468903.

It is not an unprimeable number, because it can be changed into a prime (30986401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136391 + ... + 136617.

It is an arithmetic number, because the mean of its divisors is an integer number (1851930).

Almost surely, 2^30986408 is an apocalyptic number.

It is an amenable number.

30986408 is a deficient number, since it is larger than the sum of its proper divisors (28275352).

30986408 is a wasteful number, since it uses less digits than its factorization.

30986408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497 (or 493 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 30986408 is about 5566.5436313749. The cubic root of 30986408 is about 314.0921470804.

The spelling of 30986408 in words is "thirty million, nine hundred eighty-six thousand, four hundred eight".