28580479 has 4 divisors (see below), whose sum is σ = 28703376. Its totient is φ = 28457584.

The previous prime is 28580441. The next prime is 28580483. The reversal of 28580479 is 97408582.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28580479 - 2¹⁵ = 28547711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28580429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61099 + ... + 61564.

It is an arithmetic number, because the mean of its divisors is an integer number (7175844).

Almost surely, 2^28580479 is an apocalyptic number.

28580479 is a deficient number, since it is larger than the sum of its proper divisors (122897).

28580479 is a wasteful number, since it uses less digits than its factorization.

28580479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122896.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 28580479 is about 5346.0713612895. The cubic root of 28580479 is about 305.7429848094.

The spelling of 28580479 in words is "twenty-eight million, five hundred eighty thousand, four hundred seventy-nine".