28228820609087 has 16 divisors (see below), whose sum is σ = 32727299481600. Its totient is φ = 23847865853760.

The previous prime is 28228820609083. The next prime is 28228820609123. The reversal of 28228820609087 is 78090602882282.

It is a cyclic number.

It is not a de Polignac number, because 28228820609087 - 2² = 28228820609083 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 (28228820609083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44541839 + ... + 45171152.

It is an arithmetic number, because the mean of its divisors is an integer number (2045456217600).

Almost surely, 2^{28228820609087} is an apocalyptic number.

28228820609087 is a deficient number, since it is larger than the sum of its proper divisors (4498478872513).

28228820609087 is an equidigital number, since it uses as much as digits as its factorization.

28228820609087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89713646.

The product of its (nonzero) digits is 24772608, while the sum is 62.

The spelling of 28228820609087 in words is "twenty-eight trillion, two hundred twenty-eight billion, eight hundred twenty million, six hundred nine thousand, eighty-seven".