33145144 has 16 divisors (see below), whose sum is σ = 64290600. Its totient is φ = 16000992.

The previous prime is 33145141. The next prime is 33145157. The reversal of 33145144 is 44154133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33145141) 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 in 3 ways as a sum of consecutive naturals, for example, 71202 + ... + 71665.

Almost surely, 2^33145144 is an apocalyptic number.

It is an amenable number.

33145144 is a deficient number, since it is larger than the sum of its proper divisors (31145456).

33145144 is a wasteful number, since it uses less digits than its factorization.

33145144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142902 (or 142898 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 33145144 is about 5757.1819495305. The cubic root of 33145144 is about 321.2230021673.

Adding to 33145144 its reverse (44154133), we get a palindrome (77299277).

The spelling of 33145144 in words is "thirty-three million, one hundred forty-five thousand, one hundred forty-four".