28020107 has 2 divisors, whose sum is σ = 28020108. Its totient is φ = 28020106.

The previous prime is 28020089. The next prime is 28020151. The reversal of 28020107 is 70102082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28020107 - 2⁶ = 28020043 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28020407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14010053 + 14010054.

It is an arithmetic number, because the mean of its divisors is an integer number (14010054).

Almost surely, 2^28020107 is an apocalyptic number.

28020107 is a deficient number, since it is larger than the sum of its proper divisors (1).

28020107 is an equidigital number, since it uses as much as digits as its factorization.

28020107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 28020107 is about 5293.4022140774. The cubic root of 28020107 is about 303.7315663366.

Adding to 28020107 its reverse (70102082), we get a palindrome (98122189).

The spelling of 28020107 in words is "twenty-eight million, twenty thousand, one hundred seven".