33840056 has 8 divisors (see below), whose sum is σ = 63450120. Its totient is φ = 16920024.

The previous prime is 33840049. The next prime is 33840073. The reversal of 33840056 is 65004833.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×33840056² = 2290298780166272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2114996 + ... + 2115011.

It is an arithmetic number, because the mean of its divisors is an integer number (7931265).

Almost surely, 2^33840056 is an apocalyptic number.

It is an amenable number.

33840056 is a deficient number, since it is larger than the sum of its proper divisors (29610064).

33840056 is a wasteful number, since it uses less digits than its factorization.

33840056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4230013 (or 4230009 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 33840056 is about 5817.2206421968. The cubic root of 33840056 is about 323.4523849218.

Adding to 33840056 its reverse (65004833), we get a palindrome (98844889).

The spelling of 33840056 in words is "thirty-three million, eight hundred forty thousand, fifty-six".