30208005 has 32 divisors (see below), whose sum is σ = 56534400. Its totient is φ = 15261696.

The previous prime is 30207979. The next prime is 30208033. The reversal of 30208005 is 50080203.

It is a de Polignac number, because none of the positive numbers 2^k-30208005 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 3324 + ... + 8453.

It is an arithmetic number, because the mean of its divisors is an integer number (1766700).

Almost surely, 2^30208005 is an apocalyptic number.

It is an amenable number.

30208005 is a deficient number, since it is larger than the sum of its proper divisors (26326395).

30208005 is a wasteful number, since it uses less digits than its factorization.

30208005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11810 (or 11804 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 30208005 is about 5496.1809468030. The cubic root of 30208005 is about 311.4397304529.

Adding to 30208005 its reverse (50080203), we get a palindrome (80288208).

It can be divided in two parts, 3020 and 8005, that added together give a square (11025 = 105²).

The spelling of 30208005 in words is "thirty million, two hundred eight thousand, five".