28736116 has 12 divisors (see below), whose sum is σ = 50786820. Its totient is φ = 14225600.

The previous prime is 28736077. The next prime is 28736119. The reversal of 28736116 is 61163782.

It can be written as a sum of positive squares in 2 ways, for example, as 18147600 + 10588516 = 4260^2 + 3254^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28736119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35161 + ... + 35968.

It is an arithmetic number, because the mean of its divisors is an integer number (4232235).

Almost surely, 2^28736116 is an apocalyptic number.

It is an amenable number.

28736116 is a deficient number, since it is larger than the sum of its proper divisors (22050704).

28736116 is a wasteful number, since it uses less digits than its factorization.

28736116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71234 (or 71232 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 28736116 is about 5360.6078013598. The cubic root of 28736116 is about 306.2969620610.

Adding to 28736116 its reverse (61163782), we get a palindrome (89899898).

The spelling of 28736116 in words is "twenty-eight million, seven hundred thirty-six thousand, one hundred sixteen".