28945535 has 4 divisors (see below), whose sum is σ = 34734648. Its totient is φ = 23156424.

The previous prime is 28945513. The next prime is 28945573. The reversal of 28945535 is 53554982.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28945535 - 2¹² = 28941439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28945492 and 28945501.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 2894549 + ... + 2894558.

It is an arithmetic number, because the mean of its divisors is an integer number (8683662).

Almost surely, 2^28945535 is an apocalyptic number.

28945535 is a deficient number, since it is larger than the sum of its proper divisors (5789113).

28945535 is an equidigital number, since it uses as much as digits as its factorization.

28945535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5789112.

The product of its digits is 216000, while the sum is 41.

The square root of 28945535 is about 5380.1054822373. The cubic root of 28945535 is about 307.0392244053.

The spelling of 28945535 in words is "twenty-eight million, nine hundred forty-five thousand, five hundred thirty-five".