28884878 has 12 divisors (see below), whose sum is σ = 47624640. Its totient is φ = 13129380.

The previous prime is 28884871. The next prime is 28884881. The reversal of 28884878 is 87848882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28884871) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59438 + ... + 59921.

It is an arithmetic number, because the mean of its divisors is an integer number (3968720).

Almost surely, 2^28884878 is an apocalyptic number.

28884878 is a deficient number, since it is larger than the sum of its proper divisors (18739762).

28884878 is a wasteful number, since it uses less digits than its factorization.

28884878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119383 (or 119372 counting only the distinct ones).

The product of its digits is 1835008, while the sum is 53.

The square root of 28884878 is about 5374.4653687599. The cubic root of 28884878 is about 306.8246017509.

The spelling of 28884878 in words is "twenty-eight million, eight hundred eighty-four thousand, eight hundred seventy-eight".