28230535 has 4 divisors (see below), whose sum is σ = 33876648. Its totient is φ = 22584424.

The previous prime is 28230529. The next prime is 28230563. The reversal of 28230535 is 53503282.

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 28230535 - 2⁹ = 28230023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2823049 + ... + 2823058.

It is an arithmetic number, because the mean of its divisors is an integer number (8469162).

Almost surely, 2^28230535 is an apocalyptic number.

28230535 is a deficient number, since it is larger than the sum of its proper divisors (5646113).

28230535 is an equidigital number, since it uses as much as digits as its factorization.

28230535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5646112.

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

The square root of 28230535 is about 5313.2414776669. The cubic root of 28230535 is about 304.4900014063.

The spelling of 28230535 in words is "twenty-eight million, two hundred thirty thousand, five hundred thirty-five".