30478 has 12 divisors (see below), whose sum is σ = 53352. Its totient is φ = 13020.

The previous prime is 30469. The next prime is 30491. The reversal of 30478 is 87403.

It is a plaindrome in base 12.

It is a congruent number.

It is an unprimeable number.

30478 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 in 5 ways as a sum of consecutive naturals, for example, 58 + ... + 253.

It is an arithmetic number, because the mean of its divisors is an integer number (4446).

2³⁰⁴⁷⁸ is an apocalyptic number.

30478 is a deficient number, since it is larger than the sum of its proper divisors (22874).

30478 is a wasteful number, since it uses less digits than its factorization.

30478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327 (or 320 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 30478 is about 174.5794947868. The cubic root of 30478 is about 31.2364848224.

The spelling of 30478 in words is "thirty thousand, four hundred seventy-eight".