30406 has 8 divisors (see below), whose sum is σ = 47664. Its totient is φ = 14520.

The previous prime is 30403. The next prime is 30427. The reversal of 30406 is 60403.

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

It is a super-3 number, since 3×30406³ = 84333306490248, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285 + ... + 376.

It is an arithmetic number, because the mean of its divisors is an integer number (5958).

2³⁰⁴⁰⁶ is an apocalyptic number.

30406 is a deficient number, since it is larger than the sum of its proper divisors (17258).

30406 is a wasteful number, since it uses less digits than its factorization.

30406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 30406 is about 174.3731630728. The cubic root of 30406 is about 31.2118681564.

Adding to 30406 its reverse (60403), we get a palindrome (90809).

The spelling of 30406 in words is "thirty thousand, four hundred six".