28678136 has 8 divisors (see below), whose sum is σ = 53771520. Its totient is φ = 14339064.

The previous prime is 28678109. The next prime is 28678151. The reversal of 28678136 is 63187682.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 28678093 and 28678102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1792376 + ... + 1792391.

It is an arithmetic number, because the mean of its divisors is an integer number (6721440).

Almost surely, 2^28678136 is an apocalyptic number.

It is an amenable number.

28678136 is a deficient number, since it is larger than the sum of its proper divisors (25093384).

28678136 is a wasteful number, since it uses less digits than its factorization.

28678136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3584773 (or 3584769 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 28678136 is about 5355.1971018815. The cubic root of 28678136 is about 306.0908212907.

The spelling of 28678136 in words is "twenty-eight million, six hundred seventy-eight thousand, one hundred thirty-six".