28517696 has 14 divisors (see below), whose sum is σ = 56589930. Its totient is φ = 14258816.

The previous prime is 28517663. The next prime is 28517707. The reversal of 28517696 is 69671582.

It can be written as a sum of positive squares in only one way, i.e., 28302400 + 215296 = 5320^2 + 464^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222731 + ... + 222858.

Almost surely, 2^28517696 is an apocalyptic number.

It is an amenable number.

28517696 is a deficient number, since it is larger than the sum of its proper divisors (28072234).

28517696 is an equidigital number, since it uses as much as digits as its factorization.

28517696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445601 (or 445591 counting only the distinct ones).

The product of its digits is 181440, while the sum is 44.

The square root of 28517696 is about 5340.1962510754. The cubic root of 28517696 is about 305.5189445404.

The spelling of 28517696 in words is "twenty-eight million, five hundred seventeen thousand, six hundred ninety-six".