34528509 has 6 divisors (see below), whose sum is σ = 49874526. Its totient is φ = 23019000.

The previous prime is 34528499. The next prime is 34528523. The reversal of 34528509 is 90582543.

It can be written as a sum of positive squares in only one way, i.e., 29192409 + 5336100 = 5403^2 + 2310^2 .

It is not a de Polignac number, because 34528509 - 2⁸ = 34528253 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34528709) 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, 1918242 + ... + 1918259.

It is an arithmetic number, because the mean of its divisors is an integer number (8312421).

Almost surely, 2^34528509 is an apocalyptic number.

It is an amenable number.

34528509 is a deficient number, since it is larger than the sum of its proper divisors (15346017).

34528509 is a wasteful number, since it uses less digits than its factorization.

34528509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3836507 (or 3836504 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 34528509 is about 5876.0964083310. The cubic root of 34528509 is about 325.6311490593.

The spelling of 34528509 in words is "thirty-four million, five hundred twenty-eight thousand, five hundred nine".