30146 has 4 divisors (see below), whose sum is σ = 45222. Its totient is φ = 15072.

The previous prime is 30139. The next prime is 30161. The reversal of 30146 is 64103.

Added to its reverse (64103) it gives a square (94249 = 307²).

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64103 = 13 ⋅4931.

It can be written as a sum of positive squares in only one way, i.e., 25921 + 4225 = 161^2 + 65^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30146.

It is an unprimeable number.

30146 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7535 + ... + 7538.

2³⁰¹⁴⁶ is an apocalyptic number.

30146 is a deficient number, since it is larger than the sum of its proper divisors (15076).

30146 is a wasteful number, since it uses less digits than its factorization.

30146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15075.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 30146 is about 173.6260349141. The cubic root of 30146 is about 31.1226497260.

Adding to 30146 its reverse (64103), we get a palindrome (94249).

The spelling of 30146 in words is "thirty thousand, one hundred forty-six".