28578883 has 4 divisors (see below), whose sum is σ = 28591920. Its totient is φ = 28565848.

The previous prime is 28578881. The next prime is 28578899. The reversal of 28578883 is 38887582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38887582 = 2 ⋅19443791.

It is a cyclic number.

It is not a de Polignac number, because 28578883 - 2¹ = 28578881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28578881) 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, 2335 + ... + 7912.

It is an arithmetic number, because the mean of its divisors is an integer number (7147980).

Almost surely, 2^28578883 is an apocalyptic number.

28578883 is a deficient number, since it is larger than the sum of its proper divisors (13037).

28578883 is a wasteful number, since it uses less digits than its factorization.

28578883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13036.

The product of its digits is 860160, while the sum is 49.

The square root of 28578883 is about 5345.9220907155. The cubic root of 28578883 is about 305.7372935718.

The spelling of 28578883 in words is "twenty-eight million, five hundred seventy-eight thousand, eight hundred eighty-three".