28532753 has 4 divisors (see below), whose sum is σ = 28545588. Its totient is φ = 28519920.

The previous prime is 28532747. The next prime is 28532759. The reversal of 28532753 is 35723582.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (28532747) and next prime (28532759).

It can be written as a sum of positive squares in 2 ways, for example, as 9102289 + 19430464 = 3017^2 + 4408^2 .

It is a cyclic number.

It is not a de Polignac number, because 28532753 - 2¹² = 28528657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28532759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2126 + ... + 7847.

It is an arithmetic number, because the mean of its divisors is an integer number (7136397).

Almost surely, 2^28532753 is an apocalyptic number.

It is an amenable number.

28532753 is a deficient number, since it is larger than the sum of its proper divisors (12835).

28532753 is an equidigital number, since it uses as much as digits as its factorization.

28532753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12834.

The product of its digits is 50400, while the sum is 35.

The square root of 28532753 is about 5341.6058446875. The cubic root of 28532753 is about 305.5727051874.

The spelling of 28532753 in words is "twenty-eight million, five hundred thirty-two thousand, seven hundred fifty-three".