30685089 has 4 divisors (see below), whose sum is σ = 40913456. Its totient is φ = 20456724.

The previous prime is 30685087. The next prime is 30685093. The reversal of 30685089 is 98058603.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 30685089 - 2¹ = 30685087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30685087) 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 3 ways as a sum of consecutive naturals, for example, 5114179 + ... + 5114184.

It is an arithmetic number, because the mean of its divisors is an integer number (10228364).

Almost surely, 2^30685089 is an apocalyptic number.

It is an amenable number.

30685089 is a deficient number, since it is larger than the sum of its proper divisors (10228367).

30685089 is a wasteful number, since it uses less digits than its factorization.

30685089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10228366.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 30685089 is about 5539.4123334520. The cubic root of 30685089 is about 313.0707274832.

The spelling of 30685089 in words is "thirty million, six hundred eighty-five thousand, eighty-nine".