30946 has 4 divisors (see below), whose sum is σ = 46422. Its totient is φ = 15472.

The previous prime is 30941. The next prime is 30949. The reversal of 30946 is 64903.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64903 = 41 ⋅1583.

It can be written as a sum of positive squares in only one way, i.e., 27225 + 3721 = 165^2 + 61^2 .

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 a plaindrome in base 12 and base 13.

It is not an unprimeable number, because it can be changed into a prime (30941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7735 + ... + 7738.

2³⁰⁹⁴⁶ is an apocalyptic number.

30946 is a deficient number, since it is larger than the sum of its proper divisors (15476).

30946 is a wasteful number, since it uses less digits than its factorization.

30946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15475.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 30946 is about 175.9147520818. The cubic root of 30946 is about 31.3955556478.

The spelling of 30946 in words is "thirty thousand, nine hundred forty-six".