33406 has 4 divisors (see below), whose sum is σ = 50112. Its totient is φ = 16702.

The previous prime is 33403. The next prime is 33409. The reversal of 33406 is 60433.

It is a happy number.

33406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60433 = 223 ⋅271.

It is an interprime number because it is at equal distance from previous prime (33403) and next prime (33409).

It is a super-2 number, since 2×33406² = 2231921672, which contains 22 as substring.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 33406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8350 + ... + 8353.

It is an arithmetic number, because the mean of its divisors is an integer number (12528).

2³³⁴⁰⁶ is an apocalyptic number.

33406 is a deficient number, since it is larger than the sum of its proper divisors (16706).

33406 is a wasteful number, since it uses less digits than its factorization.

33406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16705.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 33406 is about 182.7730833575. The cubic root of 33406 is about 32.2063488118.

Adding to 33406 its reverse (60433), we get a palindrome (93839).

The spelling of 33406 in words is "thirty-three thousand, four hundred six".