28048979 has 8 divisors (see below), whose sum is σ = 32171520. Its totient is φ = 23955336.

The previous prime is 28048967. The next prime is 28048981. The reversal of 28048979 is 97984082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28048979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28048919) 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 7 ways as a sum of consecutive naturals, for example, 5099 + ... + 9060.

It is an arithmetic number, because the mean of its divisors is an integer number (4021440).

Almost surely, 2^28048979 is an apocalyptic number.

28048979 is a deficient number, since it is larger than the sum of its proper divisors (4122541).

28048979 is a wasteful number, since it uses less digits than its factorization.

28048979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14449.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 28048979 is about 5296.1286804609. The cubic root of 28048979 is about 303.8358524899.

The spelling of 28048979 in words is "twenty-eight million, forty-eight thousand, nine hundred seventy-nine".