28850087 has 4 divisors (see below), whose sum is σ = 32971536. Its totient is φ = 24728640.

The previous prime is 28850083. The next prime is 28850093. The reversal of 28850087 is 78005882.

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 28850087 - 2² = 28850083 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28850087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28850083) 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, 2060714 + ... + 2060727.

It is an arithmetic number, because the mean of its divisors is an integer number (8242884).

Almost surely, 2^28850087 is an apocalyptic number.

28850087 is a deficient number, since it is larger than the sum of its proper divisors (4121449).

28850087 is an equidigital number, since it uses as much as digits as its factorization.

28850087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4121448.

The product of its (nonzero) digits is 35840, while the sum is 38.

The square root of 28850087 is about 5371.2276995115. The cubic root of 28850087 is about 306.7013651402.

The spelling of 28850087 in words is "twenty-eight million, eight hundred fifty thousand, eighty-seven".