28517796 has 54 divisors (see below), whose sum is σ = 74379942. Its totient is φ = 9207360.

The previous prime is 28517777. The next prime is 28517807. The reversal of 28517796 is 69771582.

It can be written as a sum of positive squares in only one way, i.e., 17388900 + 11128896 = 4170^2 + 3336^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 205095 + ... + 205233.

Almost surely, 2^28517796 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28517796, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37189971).

28517796 is an abundant number, since it is smaller than the sum of its proper divisors (45862146).

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

28517796 is a wasteful number, since it uses less digits than its factorization.

28517796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 185 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 28517796 is about 5340.2056140190. The cubic root of 28517796 is about 305.5193016503.

It can be divided in two parts, 285 and 17796, that added together give a palindrome (18081).

The spelling of 28517796 in words is "twenty-eight million, five hundred seventeen thousand, seven hundred ninety-six".