33528740 has 36 divisors (see below), whose sum is σ = 81908316. Its totient is φ = 11495232.

The previous prime is 33528739. The next prime is 33528751. The reversal of 33528740 is 4782533.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21473956 + 12054784 = 4634^2 + 3472^2 .

It is a super-2 number, since 2×33528740² = 2248352811975200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33528697 and 33528706.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16127 + ... + 18086.

It is an arithmetic number, because the mean of its divisors is an integer number (2275231).

Almost surely, 2^33528740 is an apocalyptic number.

It is an amenable number.

33528740 is an abundant number, since it is smaller than the sum of its proper divisors (48379576).

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

33528740 is a wasteful number, since it uses less digits than its factorization.

33528740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34236 (or 34227 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 33528740 is about 5790.4006769826. The cubic root of 33528740 is about 322.4574468623.

The spelling of 33528740 in words is "thirty-three million, five hundred twenty-eight thousand, seven hundred forty".