28346087 has 16 divisors (see below), whose sum is σ = 35457792. Its totient is φ = 22014720.

The previous prime is 28346063. The next prime is 28346099. The reversal of 28346087 is 78064382.

It is not a de Polignac number, because 28346087 - 2²² = 24151783 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 28346087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28346027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41783 + ... + 42455.

It is an arithmetic number, because the mean of its divisors is an integer number (2216112).

Almost surely, 2^28346087 is an apocalyptic number.

28346087 is a deficient number, since it is larger than the sum of its proper divisors (7111705).

28346087 is a wasteful number, since it uses less digits than its factorization.

28346087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 28346087 is about 5324.1043378206. The cubic root of 28346087 is about 304.9048776196.

The spelling of 28346087 in words is "twenty-eight million, three hundred forty-six thousand, eighty-seven".