28082807 has 4 divisors (see below), whose sum is σ = 28988736. Its totient is φ = 27176880.

The previous prime is 28082783. The next prime is 28082809. The reversal of 28082807 is 70828082.

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 28082807 - 2²² = 23888503 is a prime.

It is a super-3 number, since 3×28082807³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28082809) 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, 452918 + ... + 452979.

It is an arithmetic number, because the mean of its divisors is an integer number (7247184).

Almost surely, 2^28082807 is an apocalyptic number.

28082807 is a deficient number, since it is larger than the sum of its proper divisors (905929).

28082807 is an equidigital number, since it uses as much as digits as its factorization.

28082807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905928.

The product of its (nonzero) digits is 14336, while the sum is 35.

The square root of 28082807 is about 5299.3213716475. The cubic root of 28082807 is about 303.9579487945.

The spelling of 28082807 in words is "twenty-eight million, eighty-two thousand, eight hundred seven".