28601339 has 4 divisors (see below), whose sum is σ = 30801456. Its totient is φ = 26401224.

The previous prime is 28601297. The next prime is 28601341. The reversal of 28601339 is 93310682.

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-28601339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28601389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1100039 + ... + 1100064.

It is an arithmetic number, because the mean of its divisors is an integer number (7700364).

Almost surely, 2^28601339 is an apocalyptic number.

28601339 is a deficient number, since it is larger than the sum of its proper divisors (2200117).

28601339 is a wasteful number, since it uses less digits than its factorization.

28601339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200116.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 28601339 is about 5348.0219707851. The cubic root of 28601339 is about 305.8173508086.

The spelling of 28601339 in words is "twenty-eight million, six hundred one thousand, three hundred thirty-nine".