28578113 has 8 divisors (see below), whose sum is σ = 29407008. Its totient is φ = 27761184.

The previous prime is 28578103. The next prime is 28578127. The reversal of 28578113 is 31187582.

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

It is a cyclic number.

It is not a de Polignac number, because 28578113 - 2¹⁰ = 28577089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28578103) 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, 1970 + ... + 7812.

It is an arithmetic number, because the mean of its divisors is an integer number (3675876).

Almost surely, 2^28578113 is an apocalyptic number.

It is an amenable number.

28578113 is a deficient number, since it is larger than the sum of its proper divisors (828895).

28578113 is an equidigital number, since it uses as much as digits as its factorization.

28578113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5983.

The product of its digits is 13440, while the sum is 35.

The square root of 28578113 is about 5345.8500727200. The cubic root of 28578113 is about 305.7345477235.

The spelling of 28578113 in words is "twenty-eight million, five hundred seventy-eight thousand, one hundred thirteen".