28323878 has 16 divisors (see below), whose sum is σ = 46441296. Its totient is φ = 12848640.

The previous prime is 28323859. The next prime is 28323881. The reversal of 28323878 is 87832382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13850 + ... + 15762.

It is an arithmetic number, because the mean of its divisors is an integer number (2902581).

Almost surely, 2^28323878 is an apocalyptic number.

28323878 is a deficient number, since it is larger than the sum of its proper divisors (18117418).

28323878 is a wasteful number, since it uses less digits than its factorization.

28323878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2599.

The product of its digits is 129024, while the sum is 41.

The square root of 28323878 is about 5322.0182261995. The cubic root of 28323878 is about 304.8252263940.

The spelling of 28323878 in words is "twenty-eight million, three hundred twenty-three thousand, eight hundred seventy-eight".