28122007 has 2 divisors, whose sum is σ = 28122008. Its totient is φ = 28122006.

The previous prime is 28122001. The next prime is 28122013. The reversal of 28122007 is 70022182.

It is a balanced prime because it is at equal distance from previous prime (28122001) and next prime (28122013).

It is a cyclic number.

It is not a de Polignac number, because 28122007 - 2³ = 28121999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28122001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14061003 + 14061004.

It is an arithmetic number, because the mean of its divisors is an integer number (14061004).

Almost surely, 2^28122007 is an apocalyptic number.

28122007 is a deficient number, since it is larger than the sum of its proper divisors (1).

28122007 is an equidigital number, since it uses as much as digits as its factorization.

28122007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 28122007 is about 5303.0186686452. The cubic root of 28122007 is about 304.0993118223.

Adding to 28122007 its reverse (70022182), we get a palindrome (98144189).

The spelling of 28122007 in words is "twenty-eight million, one hundred twenty-two thousand, seven".