33538040 has 32 divisors (see below), whose sum is σ = 79434000. Its totient is φ = 12708864.

The previous prime is 33538027. The next prime is 33538049. The reversal of 33538040 is 4083533.

It is a super-2 number, since 2×33538040² = 2249600254083200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33538049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21305 + ... + 22824.

Almost surely, 2^33538040 is an apocalyptic number.

It is an amenable number.

33538040 is an abundant number, since it is smaller than the sum of its proper divisors (45895960).

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

33538040 is a wasteful number, since it uses less digits than its factorization.

33538040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44159 (or 44155 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 33538040 is about 5791.2036745395. The cubic root of 33538040 is about 322.4872578745.

The spelling of 33538040 in words is "thirty-three million, five hundred thirty-eight thousand, forty".