28578882 has 16 divisors (see below), whose sum is σ = 57882240. Its totient is φ = 9405552.

The previous prime is 28578881. The next prime is 28578899. The reversal of 28578882 is 28887582.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 29673 + ... + 30620.

It is an arithmetic number, because the mean of its divisors is an integer number (3617640).

Almost surely, 2^28578882 is an apocalyptic number.

28578882 is an abundant number, since it is smaller than the sum of its proper divisors (29303358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28578882 is a wasteful number, since it uses less digits than its factorization.

28578882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60377.

The product of its digits is 573440, while the sum is 48.

The square root of 28578882 is about 5345.9219971863. The cubic root of 28578882 is about 305.7372900058.

The spelling of 28578882 in words is "twenty-eight million, five hundred seventy-eight thousand, eight hundred eighty-two".