30147 has 8 divisors (see below), whose sum is σ = 43344. Its totient is φ = 18528.

The previous prime is 30139. The next prime is 30161. The reversal of 30147 is 74103.

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

It is not a de Polignac number, because 30147 - 2³ = 30139 is a prime.

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 30147.

It is not an unprimeable number, because it can be changed into a prime (30137) 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, 348 + ... + 425.

It is an arithmetic number, because the mean of its divisors is an integer number (5418).

2³⁰¹⁴⁷ is an apocalyptic number.

30147 is a deficient number, since it is larger than the sum of its proper divisors (13197).

30147 is a wasteful number, since it uses less digits than its factorization.

30147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 30147 is about 173.6289146427. The cubic root of 30147 is about 31.1229938547.

Subtracting 30147 from its reverse (74103), we obtain a triangular number (43956 = T₂₉₆).

The spelling of 30147 in words is "thirty thousand, one hundred forty-seven".