28068136 has 16 divisors (see below), whose sum is σ = 52784640. Its totient is φ = 13992240.

The previous prime is 28068127. The next prime is 28068167. The reversal of 28068136 is 63186082.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2280 + ... + 7831.

It is an arithmetic number, because the mean of its divisors is an integer number (3299040).

Almost surely, 2^28068136 is an apocalyptic number.

It is an amenable number.

28068136 is a deficient number, since it is larger than the sum of its proper divisors (24716504).

28068136 is a wasteful number, since it uses less digits than its factorization.

28068136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10464 (or 10460 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 28068136 is about 5297.9369569673. The cubic root of 28068136 is about 303.9050084095.

The spelling of 28068136 in words is "twenty-eight million, sixty-eight thousand, one hundred thirty-six".