108428207 has 4 divisors (see below), whose sum is σ = 108449136. Its totient is φ = 108407280.

The previous prime is 108428143. The next prime is 108428263. The reversal of 108428207 is 702824801.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 108428207 - 2⁶ = 108428143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108488207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3683 + ... + 15179.

It is an arithmetic number, because the mean of its divisors is an integer number (27112284).

Almost surely, 2^108428207 is an apocalyptic number.

108428207 is a deficient number, since it is larger than the sum of its proper divisors (20929).

108428207 is an equidigital number, since it uses as much as digits as its factorization.

108428207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20928.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 108428207 is about 10412.8865834599. The cubic root of 108428207 is about 476.8488710149.

The spelling of 108428207 in words is "one hundred eight million, four hundred twenty-eight thousand, two hundred seven".