28976579 has 4 divisors (see below), whose sum is σ = 29101176. Its totient is φ = 28851984.

The previous prime is 28976569. The next prime is 28976593. The reversal of 28976579 is 97567982.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97567982 = 2 ⋅48783991.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28976579 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28976579.

It is not an unprimeable number, because it can be changed into a prime (28976569) 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, 61949 + ... + 62414.

It is an arithmetic number, because the mean of its divisors is an integer number (7275294).

Almost surely, 2^28976579 is an apocalyptic number.

28976579 is a deficient number, since it is larger than the sum of its proper divisors (124597).

28976579 is a wasteful number, since it uses less digits than its factorization.

28976579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124596.

The product of its digits is 1905120, while the sum is 53.

The square root of 28976579 is about 5382.9897826394. The cubic root of 28976579 is about 307.1489514050.

The spelling of 28976579 in words is "twenty-eight million, nine hundred seventy-six thousand, five hundred seventy-nine".