28360807 has 4 divisors (see below), whose sum is σ = 29052576. Its totient is φ = 27669040.

The previous prime is 28360793. The next prime is 28360831. The reversal of 28360807 is 70806382.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28360807 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 (28360847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345823 + ... + 345904.

It is an arithmetic number, because the mean of its divisors is an integer number (7263144).

Almost surely, 2^28360807 is an apocalyptic number.

28360807 is a deficient number, since it is larger than the sum of its proper divisors (691769).

28360807 is an equidigital number, since it uses as much as digits as its factorization.

28360807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691768.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 28360807 is about 5325.4865505416. The cubic root of 28360807 is about 304.9576470797.

The spelling of 28360807 in words is "twenty-eight million, three hundred sixty thousand, eight hundred seven".