28878850 has 96 divisors (see below), whose sum is σ = 72245376. Its totient is φ = 8294400.

The previous prime is 28878847. The next prime is 28878851. The reversal of 28878850 is 5887882.

It is a self number, because there is not a number n which added to its sum of digits gives 28878850.

It is not an unprimeable number, because it can be changed into a prime (28878851) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49762 + ... + 50338.

It is an arithmetic number, because the mean of its divisors is an integer number (752556).

Almost surely, 2^28878850 is an apocalyptic number.

28878850 is an abundant number, since it is smaller than the sum of its proper divisors (43366526).

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

28878850 is a wasteful number, since it uses less digits than its factorization.

28878850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 46.

The square root of 28878850 is about 5373.9045395318. The cubic root of 28878850 is about 306.8032564714.

It can be divided in two parts, 28 and 878850, that added together give a palindrome (878878).

The spelling of 28878850 in words is "twenty-eight million, eight hundred seventy-eight thousand, eight hundred fifty".