28094087 has 4 divisors (see below), whose sum is σ = 32107536. Its totient is φ = 24080640.

The previous prime is 28094083. The next prime is 28094107. The reversal of 28094087 is 78049082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78049082 = 2 ⋅39024541.

It is a cyclic number.

It is not a de Polignac number, because 28094087 - 2² = 28094083 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 28094087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28094083) 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, 2006714 + ... + 2006727.

It is an arithmetic number, because the mean of its divisors is an integer number (8026884).

Almost surely, 2^28094087 is an apocalyptic number.

28094087 is a deficient number, since it is larger than the sum of its proper divisors (4013449).

28094087 is an equidigital number, since it uses as much as digits as its factorization.

28094087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4013448.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 28094087 is about 5300.3855520141. The cubic root of 28094087 is about 303.9986402005.

It can be divided in two parts, 2809408 and 7, that multiplied together give a triangular number (19665856 = T₆₂₇₁).

The spelling of 28094087 in words is "twenty-eight million, ninety-four thousand, eighty-seven".