28767085 has 4 divisors (see below), whose sum is σ = 34520508. Its totient is φ = 23013664.

The previous prime is 28767071. The next prime is 28767113. The reversal of 28767085 is 58076782.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17464041 + 11303044 = 4179^2 + 3362^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28767085 is a prime.

It is a Duffinian number.

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, 2876704 + ... + 2876713.

It is an arithmetic number, because the mean of its divisors is an integer number (8630127).

Almost surely, 2^28767085 is an apocalyptic number.

It is an amenable number.

28767085 is a deficient number, since it is larger than the sum of its proper divisors (5753423).

28767085 is an equidigital number, since it uses as much as digits as its factorization.

28767085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5753422.

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 28767085 is about 5363.4955952252. The cubic root of 28767085 is about 306.4069549478.

The spelling of 28767085 in words is "twenty-eight million, seven hundred sixty-seven thousand, eighty-five".