33528945 has 16 divisors (see below), whose sum is σ = 54141120. Its totient is φ = 17717184.

The previous prime is 33528941. The next prime is 33528953. The reversal of 33528945 is 54982533.

It is not a de Polignac number, because 33528945 - 2² = 33528941 is a prime.

It is a super-2 number, since 2×33528945² = 2248380305626050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (33528941) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 8619 + ... + 11888.

It is an arithmetic number, because the mean of its divisors is an integer number (3383820).

Almost surely, 2^33528945 is an apocalyptic number.

It is an amenable number.

33528945 is a deficient number, since it is larger than the sum of its proper divisors (20612175).

33528945 is a wasteful number, since it uses less digits than its factorization.

33528945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20624.

The product of its digits is 129600, while the sum is 39.

The square root of 33528945 is about 5790.4183786666. The cubic root of 33528945 is about 322.4581040461.

The spelling of 33528945 in words is "thirty-three million, five hundred twenty-eight thousand, nine hundred forty-five".