28996686 has 12 divisors (see below), whose sum is σ = 62826192. Its totient is φ = 9665556.

The previous prime is 28996657. The next prime is 28996691. The reversal of 28996686 is 68669982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 805446 + ... + 805481.

It is an arithmetic number, because the mean of its divisors is an integer number (5235516).

Almost surely, 2^28996686 is an apocalyptic number.

28996686 is an abundant number, since it is smaller than the sum of its proper divisors (33829506).

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

28996686 is a wasteful number, since it uses less digits than its factorization.

28996686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610935 (or 1610932 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 28996686 is about 5384.8571011681. The cubic root of 28996686 is about 307.2199790676.

The spelling of 28996686 in words is "twenty-eight million, nine hundred ninety-six thousand, six hundred eighty-six".