28769599 has 4 divisors (see below), whose sum is σ = 29199064. Its totient is φ = 28340136.

The previous prime is 28769597. The next prime is 28769603. The reversal of 28769599 is 99596782.

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 28769599 - 2¹ = 28769597 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 (28769597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214632 + ... + 214765.

It is an arithmetic number, because the mean of its divisors is an integer number (7299766).

Almost surely, 2^28769599 is an apocalyptic number.

28769599 is a deficient number, since it is larger than the sum of its proper divisors (429465).

28769599 is an equidigital number, since it uses as much as digits as its factorization.

28769599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429464.

The product of its digits is 2449440, while the sum is 55.

The square root of 28769599 is about 5363.7299521881. The cubic root of 28769599 is about 306.4158804802.

The spelling of 28769599 in words is "twenty-eight million, seven hundred sixty-nine thousand, five hundred ninety-nine".