30908149 has 8 divisors (see below), whose sum is σ = 31351320. Its totient is φ = 30468096.

The previous prime is 30908089. The next prime is 30908167. The reversal of 30908149 is 94180903.

It can be written as a sum of positive squares in 4 ways, for example, as 1909924 + 28998225 = 1382^2 + 5385^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30908149 - 2¹⁷ = 30777077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30908749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24789 + ... + 26005.

It is an arithmetic number, because the mean of its divisors is an integer number (3918915).

Almost surely, 2^30908149 is an apocalyptic number.

It is an amenable number.

30908149 is a deficient number, since it is larger than the sum of its proper divisors (443171).

30908149 is a wasteful number, since it uses less digits than its factorization.

30908149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 30908149 is about 5559.5097805472. The cubic root of 30908149 is about 313.8275013699.

The spelling of 30908149 in words is "thirty million, nine hundred eight thousand, one hundred forty-nine".