28272116 has 12 divisors (see below), whose sum is σ = 49536480. Its totient is φ = 14118840.

The previous prime is 28272103. The next prime is 28272137. The reversal of 28272116 is 61127282.

It is a congruent number.

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, 170 + ... + 7521.

It is an arithmetic number, because the mean of its divisors is an integer number (4128040).

Almost surely, 2^28272116 is an apocalyptic number.

It is an amenable number.

28272116 is a deficient number, since it is larger than the sum of its proper divisors (21264364).

28272116 is a wasteful number, since it uses less digits than its factorization.

28272116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8614 (or 8612 counting only the distinct ones).

The product of its digits is 2688, while the sum is 29.

The square root of 28272116 is about 5317.1529976107. The cubic root of 28272116 is about 304.6394233905.

Adding to 28272116 its reverse (61127282), we get a palindrome (89399398).

The spelling of 28272116 in words is "twenty-eight million, two hundred seventy-two thousand, one hundred sixteen".