33056138 has 4 divisors (see below), whose sum is σ = 49584210. Its totient is φ = 16528068.

The previous prime is 33056131. The next prime is 33056141. The reversal of 33056138 is 83165033.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17032129 + 16024009 = 4127^2 + 4003^2 .

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 33056138.

It is not an unprimeable number, because it can be changed into a prime (33056131) by changing a digit.

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 as a sum of consecutive naturals, namely, 8264033 + ... + 8264036.

Almost surely, 2^33056138 is an apocalyptic number.

33056138 is a deficient number, since it is larger than the sum of its proper divisors (16528072).

33056138 is a wasteful number, since it uses less digits than its factorization.

33056138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16528071.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 33056138 is about 5749.4467559931. The cubic root of 33056138 is about 320.9352133561.

The spelling of 33056138 in words is "thirty-three million, fifty-six thousand, one hundred thirty-eight".