30808173 has 12 divisors (see below), whose sum is σ = 45151904. Its totient is φ = 18671400.

The previous prime is 30808163. The next prime is 30808181. The reversal of 30808173 is 37180803.

It is not a de Polignac number, because 30808173 - 2⁴ = 30808157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30808173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30808123) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 42073 + ... + 42798.

Almost surely, 2^30808173 is an apocalyptic number.

30808173 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

30808173 is a deficient number, since it is larger than the sum of its proper divisors (14343731).

30808173 is a wasteful number, since it uses less digits than its factorization.

30808173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84896 (or 84885 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 30808173 is about 5550.5110575514. The cubic root of 30808173 is about 313.4887653715.

Adding to 30808173 its reverse (37180803), we get a palindrome (67988976).

The spelling of 30808173 in words is "thirty million, eight hundred eight thousand, one hundred seventy-three".