33040638 has 12 divisors (see below), whose sum is σ = 71588088. Its totient is φ = 11013540.

The previous prime is 33040633. The next prime is 33040661. The reversal of 33040638 is 83604033.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33040633) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 917778 + ... + 917813.

It is an arithmetic number, because the mean of its divisors is an integer number (5965674).

Almost surely, 2^33040638 is an apocalyptic number.

33040638 is an abundant number, since it is smaller than the sum of its proper divisors (38547450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33040638 is a wasteful number, since it uses less digits than its factorization.

33040638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835599 (or 1835596 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 33040638 is about 5748.0986421599. The cubic root of 33040638 is about 320.8850434146.

The spelling of 33040638 in words is "thirty-three million, forty thousand, six hundred thirty-eight".