33805540 has 12 divisors (see below), whose sum is σ = 70991676. Its totient is φ = 13522208.

The previous prime is 33805517. The next prime is 33805543. The reversal of 33805540 is 4550833.

It can be written as a sum of positive squares in 2 ways, for example, as 22676644 + 11128896 = 4762^2 + 3336^2 .

It is a super-2 number, since 2×33805540² = 2285629069383200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33805499 and 33805508.

It is not an unprimeable number, because it can be changed into a prime (33805543) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 845119 + ... + 845158.

It is an arithmetic number, because the mean of its divisors is an integer number (5915973).

Almost surely, 2^33805540 is an apocalyptic number.

It is an amenable number.

33805540 is an abundant number, since it is smaller than the sum of its proper divisors (37186136).

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

33805540 is a wasteful number, since it uses less digits than its factorization.

33805540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690286 (or 1690284 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 33805540 is about 5814.2531764621. The cubic root of 33805540 is about 323.3423764313.

The spelling of 33805540 in words is "thirty-three million, eight hundred five thousand, five hundred forty".