28350807 has 4 divisors (see below), whose sum is σ = 37801080. Its totient is φ = 18900536.

The previous prime is 28350767. The next prime is 28350811. The reversal of 28350807 is 70805382.

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 28350807 - 2¹² = 28346711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28350877) 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 in 3 ways as a sum of consecutive naturals, for example, 4725132 + ... + 4725137.

It is an arithmetic number, because the mean of its divisors is an integer number (9450270).

Almost surely, 2^28350807 is an apocalyptic number.

28350807 is a deficient number, since it is larger than the sum of its proper divisors (9450273).

28350807 is an equidigital number, since it uses as much as digits as its factorization.

28350807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9450272.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 28350807 is about 5324.5475864152. The cubic root of 28350807 is about 304.9218002511.

The spelling of 28350807 in words is "twenty-eight million, three hundred fifty thousand, eight hundred seven".