28685576 has 8 divisors (see below), whose sum is σ = 53785470. Its totient is φ = 14342784.

The previous prime is 28685567. The next prime is 28685597. The reversal of 28685576 is 67558682.

It can be written as a sum of positive squares in only one way, i.e., 28408900 + 276676 = 5330^2 + 526^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 28685576.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1792841 + ... + 1792856.

Almost surely, 2^28685576 is an apocalyptic number.

It is an amenable number.

28685576 is a deficient number, since it is larger than the sum of its proper divisors (25099894).

28685576 is a wasteful number, since it uses less digits than its factorization.

28685576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3585703 (or 3585699 counting only the distinct ones).

The product of its digits is 806400, while the sum is 47.

The square root of 28685576 is about 5355.8917091368. The cubic root of 28685576 is about 306.1172888268.

The spelling of 28685576 in words is "twenty-eight million, six hundred eighty-five thousand, five hundred seventy-six".