28590979 has 4 divisors (see below), whose sum is σ = 28874160. Its totient is φ = 28307800.

The previous prime is 28590971. The next prime is 28590997. The reversal of 28590979 is 97909582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97909582 = 2 ⋅48954791.

It is a cyclic number.

It is not a de Polignac number, because 28590979 - 2³ = 28590971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28590971) 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, 141439 + ... + 141640.

It is an arithmetic number, because the mean of its divisors is an integer number (7218540).

Almost surely, 2^28590979 is an apocalyptic number.

28590979 is a deficient number, since it is larger than the sum of its proper divisors (283181).

28590979 is a wasteful number, since it uses less digits than its factorization.

28590979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283180.

The product of its (nonzero) digits is 408240, while the sum is 49.

The square root of 28590979 is about 5347.0533006507. The cubic root of 28590979 is about 305.7804218806.

The spelling of 28590979 in words is "twenty-eight million, five hundred ninety thousand, nine hundred seventy-nine".