308146 has 4 divisors (see below), whose sum is σ = 462222. Its totient is φ = 154072.

The previous prime is 308141. The next prime is 308149. The reversal of 308146 is 641803.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 308025 + 121 = 555^2 + 11^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (308141) by changing a digit.

308146 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, 77035 + ... + 77038.

2³⁰⁸¹⁴⁶ is an apocalyptic number.

308146 is a deficient number, since it is larger than the sum of its proper divisors (154076).

308146 is a wasteful number, since it uses less digits than its factorization.

308146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154075.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 308146 is about 555.1089983057. The cubic root of 308146 is about 67.5438033012.

Adding to 308146 its reverse (641803), we get a palindrome (949949).

It can be divided in two parts, 308 and 146, that added together give a palindrome (454).

The spelling of 308146 in words is "three hundred eight thousand, one hundred forty-six".