30149 has 8 divisors (see below), whose sum is σ = 35520. Its totient is φ = 25056.

The previous prime is 30139. The next prime is 30161. The reversal of 30149 is 94103.

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 30149 - 2⁴ = 30133 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 30149.

It is not an unprimeable number, because it can be changed into a prime (30109) 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, 377 + ... + 449.

It is an arithmetic number, because the mean of its divisors is an integer number (4440).

2³⁰¹⁴⁹ is an apocalyptic number.

It is an amenable number.

30149 is a deficient number, since it is larger than the sum of its proper divisors (5371).

30149 is an equidigital number, since it uses as much as digits as its factorization.

30149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 30149 is about 173.6346739566. The cubic root of 30149 is about 31.1236820891.

The spelling of 30149 in words is "thirty thousand, one hundred forty-nine".