28872588 has 24 divisors (see below), whose sum is σ = 67459392. Its totient is φ = 9611344.

The previous prime is 28872587. The next prime is 28872589. The reversal of 28872588 is 88527882.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28872587) and next prime (28872589).

It is not an unprimeable number, because it can be changed into a prime (28872587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13231 + ... + 15257.

It is an arithmetic number, because the mean of its divisors is an integer number (2810808).

Almost surely, 2^28872588 is an apocalyptic number.

It is an amenable number.

28872588 is an abundant number, since it is smaller than the sum of its proper divisors (38586804).

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

28872588 is a wasteful number, since it uses less digits than its factorization.

28872588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3221 (or 3219 counting only the distinct ones).

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

The square root of 28872588 is about 5373.3218775726. The cubic root of 28872588 is about 306.7810794472.

The spelling of 28872588 in words is "twenty-eight million, eight hundred seventy-two thousand, five hundred eighty-eight".