28650007 has 2 divisors, whose sum is σ = 28650008. Its totient is φ = 28650006.

The previous prime is 28650001. The next prime is 28650047. The reversal of 28650007 is 70005682.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28650007 is a prime.

It is a super-2 number, since 2×28650007² = 1641645802200098, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28650001) 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 as a sum of consecutive naturals, namely, 14325003 + 14325004.

It is an arithmetic number, because the mean of its divisors is an integer number (14325004).

Almost surely, 2^28650007 is an apocalyptic number.

28650007 is a deficient number, since it is larger than the sum of its proper divisors (1).

28650007 is an equidigital number, since it uses as much as digits as its factorization.

28650007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 28650007 is about 5352.5701303206. The cubic root of 28650007 is about 305.9907119797.

Adding to 28650007 its reverse (70005682), we get a palindrome (98655689).

The spelling of 28650007 in words is "twenty-eight million, six hundred fifty thousand, seven".