28113535 has 8 divisors (see below), whose sum is σ = 34240176. Its totient is φ = 22154880.

The previous prime is 28113523. The next prime is 28113539. The reversal of 28113535 is 53531182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28113535 - 2¹¹ = 28111487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28113539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41626 + ... + 42295.

It is an arithmetic number, because the mean of its divisors is an integer number (4280022).

Almost surely, 2^28113535 is an apocalyptic number.

28113535 is a deficient number, since it is larger than the sum of its proper divisors (6126641).

28113535 is an equidigital number, since it uses as much as digits as its factorization.

28113535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83993.

The product of its digits is 3600, while the sum is 28.

The square root of 28113535 is about 5302.2198181516. The cubic root of 28113535 is about 304.0687712315.

The spelling of 28113535 in words is "twenty-eight million, one hundred thirteen thousand, five hundred thirty-five".