28968579 has 12 divisors (see below), whose sum is σ = 41918032. Its totient is φ = 19278000.

The previous prime is 28968557. The next prime is 28968613. The reversal of 28968579 is 97586982.

It is a happy number.

28968579 is a `hidden beast` number, since 2 + 8 + 9 + 68 + 579 = 666.

It is not a de Polignac number, because 28968579 - 2⁷ = 28968451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28967579) 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 11 ways as a sum of consecutive naturals, for example, 3129 + ... + 8229.

Almost surely, 2^28968579 is an apocalyptic number.

28968579 is a deficient number, since it is larger than the sum of its proper divisors (12949453).

28968579 is a wasteful number, since it uses less digits than its factorization.

28968579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5738 (or 5735 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 28968579 is about 5382.2466498666. The cubic root of 28968579 is about 307.1206823930.

The spelling of 28968579 in words is "twenty-eight million, nine hundred sixty-eight thousand, five hundred seventy-nine".