28580057 has 8 divisors (see below), whose sum is σ = 31236192. Its totient is φ = 25933600.

The previous prime is 28580023. The next prime is 28580063. The reversal of 28580057 is 75008582.

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

It is not a de Polignac number, because 28580057 - 2⁸ = 28579801 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28579999 and 28580026.

It is not an unprimeable number, because it can be changed into a prime (28580017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4682 + ... + 8892.

It is an arithmetic number, because the mean of its divisors is an integer number (3904524).

Almost surely, 2^28580057 is an apocalyptic number.

It is an amenable number.

28580057 is a deficient number, since it is larger than the sum of its proper divisors (2656135).

28580057 is a wasteful number, since it uses less digits than its factorization.

28580057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4839.

The product of its (nonzero) digits is 22400, while the sum is 35.

The square root of 28580057 is about 5346.0318929090. The cubic root of 28580057 is about 305.7414800040.

It can be divided in two parts, 28 and 580057, that added together give a palindrome (580085).

The spelling of 28580057 in words is "twenty-eight million, five hundred eighty thousand, fifty-seven".