28665796 has 12 divisors (see below), whose sum is σ = 50302252. Its totient is φ = 14293728.

The previous prime is 28665781. The next prime is 28665809. The reversal of 28665796 is 69756682.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 22905796 + 5760000 = 4786^2 + 2400^2 .

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, 8115 + ... + 11098.

Almost surely, 2^28665796 is an apocalyptic number.

It is an amenable number.

28665796 is a deficient number, since it is larger than the sum of its proper divisors (21636456).

28665796 is a wasteful number, since it uses less digits than its factorization.

28665796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19590 (or 19588 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 49.

The square root of 28665796 is about 5354.0448261104. The cubic root of 28665796 is about 306.0469120837.

The spelling of 28665796 in words is "twenty-eight million, six hundred sixty-five thousand, seven hundred ninety-six".