33806138 has 8 divisors (see below), whose sum is σ = 50838132. Its totient is φ = 16860096.

The previous prime is 33806117. The next prime is 33806147. The reversal of 33806138 is 83160833.

It is a happy number.

33806138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 30283009 + 3523129 = 5503^2 + 1877^2 .

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

It is a super-2 number, since 2×33806138² = 2285709932950088, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20495 + ... + 22082.

Almost surely, 2^33806138 is an apocalyptic number.

33806138 is a deficient number, since it is larger than the sum of its proper divisors (17031994).

33806138 is a wasteful number, since it uses less digits than its factorization.

33806138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42976.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 33806138 is about 5814.3046015839. The cubic root of 33806138 is about 323.3442829985.

The spelling of 33806138 in words is "thirty-three million, eight hundred six thousand, one hundred thirty-eight".