28476925787 has 2 divisors, whose sum is σ = 28476925788. Its totient is φ = 28476925786.

The previous prime is 28476925783. The next prime is 28476925877. The reversal of 28476925787 is 78752967482.

Together with next prime (28476925877) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28476925787 - 2² = 28476925783 is a prime.

It is not a weakly prime, because it can be changed into another prime (28476925783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14238462893 + 14238462894.

It is an arithmetic number, because the mean of its divisors is an integer number (14238462894).

Almost surely, 2^28476925787 is an apocalyptic number.

28476925787 is a deficient number, since it is larger than the sum of its proper divisors (1).

28476925787 is an equidigital number, since it uses as much as digits as its factorization.

28476925787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94832640, while the sum is 65.

The spelling of 28476925787 in words is "twenty-eight billion, four hundred seventy-six million, nine hundred twenty-five thousand, seven hundred eighty-seven".