28680007 has 2 divisors, whose sum is σ = 28680008. Its totient is φ = 28680006.

The previous prime is 28679999. The next prime is 28680017. The reversal of 28680007 is 70008682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28680007 - 2³ = 28679999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28680017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14340003 + 14340004.

It is an arithmetic number, because the mean of its divisors is an integer number (14340004).

Almost surely, 2^28680007 is an apocalyptic number.

28680007 is a deficient number, since it is larger than the sum of its proper divisors (1).

28680007 is an equidigital number, since it uses as much as digits as its factorization.

28680007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 28680007 is about 5355.3717891478. The cubic root of 28680007 is about 306.0974777376.

Adding to 28680007 its reverse (70008682), we get a palindrome (98688689).

The spelling of 28680007 in words is "twenty-eight million, six hundred eighty thousand, seven".