33006406 has 4 divisors (see below), whose sum is σ = 49509612. Its totient is φ = 16503202.

The previous prime is 33006383. The next prime is 33006419. The reversal of 33006406 is 60460033.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60460033 = 19 ⋅3182107.

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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8251600 + ... + 8251603.

It is an arithmetic number, because the mean of its divisors is an integer number (12377403).

Almost surely, 2^33006406 is an apocalyptic number.

33006406 is a deficient number, since it is larger than the sum of its proper divisors (16503206).

33006406 is a wasteful number, since it uses less digits than its factorization.

33006406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16503205.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 33006406 is about 5745.1201902136. The cubic root of 33006406 is about 320.7741866718.

Adding to 33006406 its reverse (60460033), we get a palindrome (93466439).

The spelling of 33006406 in words is "thirty-three million, six thousand, four hundred six".